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What do you do with your egg shells?

by (18691)
Updated September 16, 2014 at 7:28 PM
Created August 25, 2011 at 7:14 PM

Eat them? Compost them? Throw them away?

I would appreciate knowing why you make that decision too.

D10ca8d11301c2f4993ac2279ce4b930
5232 · August 27, 2011 at 8:01 AM

It is a salt which is water soluble in slightly acidic medium (i.e. coffee). The better bioavailability has to do with consumption of CA ions versus calcium salt. If taken with a meal, carbonate is as bio-available as most salts.

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1774 · August 27, 2011 at 12:20 AM

hmm, Calcium Carbonate IS a salt. By protonating the base, you neutralize the negative charge on the carbonate ligand which leads to a lesser binding affinity to the calcium ion - this may be the cause for the better bio-availability.

Ed983a42344945b1ff70fd9597a23493
11099 · August 26, 2011 at 5:23 PM

I use my Vitamix, and the top is fine.

Ed983a42344945b1ff70fd9597a23493
11099 · August 26, 2011 at 5:20 PM

I did once, with a previous flock...not fun!

D10ca8d11301c2f4993ac2279ce4b930
5232 · August 26, 2011 at 5:12 PM

Not all of it assimilates but a good amount does (Unless you steep it for a good while)

De641ff2accb4975e1f42886b43009db
2227 · August 26, 2011 at 3:37 PM

Well since destroying our blender we haven't chopped more of them.. maybe double bag them and use a hammer?

559aa134ff5e6c8bcd608ba8dc505628
3631 · August 26, 2011 at 3:30 PM

i see !

91c2e2a35e578e2e79ce7d631b753879
2081 · August 26, 2011 at 3:10 PM

We compost ours, as well.

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18691 · August 26, 2011 at 3:08 PM

Thanks for the tip! I totally would have used my blender! What do you use?

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18691 · August 26, 2011 at 3:03 PM

Like crackers? Ew. Do you at least put cheese on them? ;) Everything is better with cheese. The texture grosses me out. I hate when I even get a little bit on my hard boiled egg.

D3ff004d4a0c42b67cc2c49a5ee9c0f3
5796 · August 26, 2011 at 2:55 PM

I haven't had any problems with my chickens eating their eggs while feeding whole egg shells.

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18691 · August 26, 2011 at 1:38 PM

I have no idea what kind of turtle he is! My husband knows though. I eat a lot of hard boiled eggs, so I can certainly save the shells for him and grind them up.

0e2772604bdb3627525b42d77340538b
953 · August 26, 2011 at 1:31 PM

If they're not from boiled eggs, just boil them and crunch them up. He doesn't eat many yet, but I'm hoping he will when he gets a bit older. I hear you can make an omelet for a turtle and include the eggshells, which I'm going to try. He's an Eastern Box Turtle. What kind do you have?

7e746be2f0e550a8cd7df881322ae705
18691 · August 26, 2011 at 1:25 PM

Ooh your turtle? I have a turtle! How do you prep them for him?

D10ca8d11301c2f4993ac2279ce4b930
5232 · August 25, 2011 at 11:47 PM

The carbonate being a Brønsted base will accept the hydrogen which causes the deprotonating of the acid allowing for the acid to form a calcium salt. This makes the calcium more bioavailable and also takes a little bit of the acidic edge off of the coffee.

D10ca8d11301c2f4993ac2279ce4b930
5232 · August 25, 2011 at 11:46 PM

The carbonate being a Brønsted base will accept the hypdroge which causes the deprotonating of the acid allowing for the acid to form a calcium salt. This makes the calcium more bioavailable and also takes a little bit of the acidic edge off of the coffee.

D10ca8d11301c2f4993ac2279ce4b930
5232 · August 25, 2011 at 11:40 PM

This also will neutralize the acids making the coffee less acidic.

D10ca8d11301c2f4993ac2279ce4b930
5232 · August 25, 2011 at 11:40 PM

This also will neutralizing the acids making the coffee less acidic.

D10ca8d11301c2f4993ac2279ce4b930
5232 · August 25, 2011 at 11:37 PM

Calcium carbonate is water soluble in dilute acids (i.e. coffee). A number of the acids in coffee can bind to the calcium ion to form a salt which would increase bioavailability but the water solubility should be enough.

559aa134ff5e6c8bcd608ba8dc505628
3631 · August 25, 2011 at 8:04 PM

i heard eating them works. so why the french press? - are they strained out w/ the grounds? if so, what is the benefit? does the coffee do something?

D10ca8d11301c2f4993ac2279ce4b930
5232 · August 25, 2011 at 8:00 PM

The acidity of the coffee acts as an acid. But carbonate should have similar absorbability if taken with a meal.

0dbd7154d909b97fe774d1655754f195
16131 · August 25, 2011 at 7:46 PM

I eat them too - when ground they are a fine powder. Except I just take a teaspoonful and chase with water. I doh't know if this is true, but I heard that 1 eggshell = 2,000 mg of calcium.

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747 · August 25, 2011 at 7:40 PM

I toss the, as well... we are evil together

559aa134ff5e6c8bcd608ba8dc505628
3631 · August 25, 2011 at 7:34 PM

or is it that it's ground so finely, it's just sort of mixed into your coffee..?

559aa134ff5e6c8bcd608ba8dc505628
3631 · August 25, 2011 at 7:33 PM

wait, so is there something about coffee that makes the calcium come out into yr beverage?

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1607 · August 25, 2011 at 7:22 PM

I toss them. I'm a bad person. :(

D10ca8d11301c2f4993ac2279ce4b930
5232 · August 25, 2011 at 7:21 PM

Maybe a little bit. It's great for cheaper coffee (which I don't really drink) because it takes away the bitter bite. But when my coffees really fresh, I usually abstain for the first couple days to maximize enjoyment. But I'm a pretty big coffee snob. Probably not noticeably for most folks. *shout out SEATTLE*

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655 · August 25, 2011 at 7:19 PM

compost........

7e746be2f0e550a8cd7df881322ae705
18691 · August 25, 2011 at 7:17 PM

Do they change the taste of your coffee at all? I french press my coffee too, so this would totally work for me!

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D10ca8d11301c2f4993ac2279ce4b930
7
5232 · August 25, 2011 at 7:16 PM

Boil them, dry them and then grind them and put them in my french press while I'm brewing coffee. Calcium is hard to come by while on Paleo!

D10ca8d11301c2f4993ac2279ce4b930
5232 · August 27, 2011 at 8:01 AM

It is a salt which is water soluble in slightly acidic medium (i.e. coffee). The better bioavailability has to do with consumption of CA ions versus calcium salt. If taken with a meal, carbonate is as bio-available as most salts.

6b365c14c646462210f3ef6b6fecace1
1774 · August 27, 2011 at 12:20 AM

hmm, Calcium Carbonate IS a salt. By protonating the base, you neutralize the negative charge on the carbonate ligand which leads to a lesser binding affinity to the calcium ion - this may be the cause for the better bio-availability.

D10ca8d11301c2f4993ac2279ce4b930
5232 · August 26, 2011 at 5:12 PM

Not all of it assimilates but a good amount does (Unless you steep it for a good while)

559aa134ff5e6c8bcd608ba8dc505628
3631 · August 26, 2011 at 3:30 PM

i see !

D10ca8d11301c2f4993ac2279ce4b930
5232 · August 25, 2011 at 11:47 PM

The carbonate being a Brønsted base will accept the hydrogen which causes the deprotonating of the acid allowing for the acid to form a calcium salt. This makes the calcium more bioavailable and also takes a little bit of the acidic edge off of the coffee.

D10ca8d11301c2f4993ac2279ce4b930
5232 · August 25, 2011 at 11:46 PM

The carbonate being a Brønsted base will accept the hypdroge which causes the deprotonating of the acid allowing for the acid to form a calcium salt. This makes the calcium more bioavailable and also takes a little bit of the acidic edge off of the coffee.

D10ca8d11301c2f4993ac2279ce4b930
5232 · August 25, 2011 at 11:40 PM

This also will neutralize the acids making the coffee less acidic.

D10ca8d11301c2f4993ac2279ce4b930
5232 · August 25, 2011 at 11:40 PM

This also will neutralizing the acids making the coffee less acidic.

D10ca8d11301c2f4993ac2279ce4b930
5232 · August 25, 2011 at 11:37 PM

Calcium carbonate is water soluble in dilute acids (i.e. coffee). A number of the acids in coffee can bind to the calcium ion to form a salt which would increase bioavailability but the water solubility should be enough.

559aa134ff5e6c8bcd608ba8dc505628
3631 · August 25, 2011 at 8:04 PM

i heard eating them works. so why the french press? - are they strained out w/ the grounds? if so, what is the benefit? does the coffee do something?

0dbd7154d909b97fe774d1655754f195
16131 · August 25, 2011 at 7:46 PM

I eat them too - when ground they are a fine powder. Except I just take a teaspoonful and chase with water. I doh't know if this is true, but I heard that 1 eggshell = 2,000 mg of calcium.

559aa134ff5e6c8bcd608ba8dc505628
3631 · August 25, 2011 at 7:34 PM

or is it that it's ground so finely, it's just sort of mixed into your coffee..?

559aa134ff5e6c8bcd608ba8dc505628
3631 · August 25, 2011 at 7:33 PM

wait, so is there something about coffee that makes the calcium come out into yr beverage?

D10ca8d11301c2f4993ac2279ce4b930
5232 · August 25, 2011 at 7:21 PM

Maybe a little bit. It's great for cheaper coffee (which I don't really drink) because it takes away the bitter bite. But when my coffees really fresh, I usually abstain for the first couple days to maximize enjoyment. But I'm a pretty big coffee snob. Probably not noticeably for most folks. *shout out SEATTLE*

7e746be2f0e550a8cd7df881322ae705
18691 · August 25, 2011 at 7:17 PM

Do they change the taste of your coffee at all? I french press my coffee too, so this would totally work for me!

5ea8f17252dad5376000af72cf5a75be
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128 · August 25, 2011 at 7:30 PM

I grind them and mix with lemon juice to make calcium citrate and then take 1/4 tsp a day. Store in refrigerator. I do this to make the calcium more available for absorption, its also dependent on stomach acidity so eat this when stomach acid is highest earlier in the day.

D10ca8d11301c2f4993ac2279ce4b930
5232 · August 25, 2011 at 8:00 PM

The acidity of the coffee acts as an acid. But carbonate should have similar absorbability if taken with a meal.

0e2772604bdb3627525b42d77340538b
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953 · August 26, 2011 at 1:17 PM

Feed them to my turtle.

I'm going to try eating them myself.

7e746be2f0e550a8cd7df881322ae705
18691 · August 26, 2011 at 1:38 PM

I have no idea what kind of turtle he is! My husband knows though. I eat a lot of hard boiled eggs, so I can certainly save the shells for him and grind them up.

0e2772604bdb3627525b42d77340538b
953 · August 26, 2011 at 1:31 PM

If they're not from boiled eggs, just boil them and crunch them up. He doesn't eat many yet, but I'm hoping he will when he gets a bit older. I hear you can make an omelet for a turtle and include the eggshells, which I'm going to try. He's an Eastern Box Turtle. What kind do you have?

7e746be2f0e550a8cd7df881322ae705
18691 · August 26, 2011 at 1:25 PM

Ooh your turtle? I have a turtle! How do you prep them for him?

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1072 · August 26, 2011 at 6:04 AM

For paleo gardeners: Crush them into small pieces and sprinkle around the base of plants that get ravished by slugs and snails. Coffee grounds also do the same.

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230 · August 25, 2011 at 7:51 PM

Ha, I peel the membrane away, dry them, crush them, and feed them in small doses to my raw-fed pride of kitties that don't like to eat bone as often as they should :-) I didn't even consider using them for myself! I'm curious to know what others do with them as well

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2227 · August 26, 2011 at 3:05 PM

My mom saves them for putting in her garden. But don't use your blender to chop them up, they will destroy the plastic part of your blender giving it a "foggy" look.

Ed983a42344945b1ff70fd9597a23493
11099 · August 26, 2011 at 5:23 PM

I use my Vitamix, and the top is fine.

De641ff2accb4975e1f42886b43009db
2227 · August 26, 2011 at 3:37 PM

Well since destroying our blender we haven't chopped more of them.. maybe double bag them and use a hammer?

7e746be2f0e550a8cd7df881322ae705
18691 · August 26, 2011 at 3:08 PM

Thanks for the tip! I totally would have used my blender! What do you use?

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18397 · August 26, 2011 at 2:58 PM

I eat them like crackers, in my quest to become the ossified man.

7e746be2f0e550a8cd7df881322ae705
18691 · August 26, 2011 at 3:03 PM

Like crackers? Ew. Do you at least put cheese on them? ;) Everything is better with cheese. The texture grosses me out. I hate when I even get a little bit on my hard boiled egg.

F2b854f65de6621f5ecb6ec9ba14eb49
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519 · August 26, 2011 at 2:17 PM

Dry and grind it up and put about 1 tsp. in my cats homemade raw food since they are to lazy to eat bones.

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11099 · August 26, 2011 at 5:18 AM

I let them dry, grind to a fine powder in the vita-mix, and mix in with my chickens' food instead of oyster shells. It has to be really finely ground so they don't recognize it as their own egg shellls...otherwise, they may start eating their eggs.

Ed983a42344945b1ff70fd9597a23493
11099 · August 26, 2011 at 5:20 PM

I did once, with a previous flock...not fun!

D3ff004d4a0c42b67cc2c49a5ee9c0f3
5796 · August 26, 2011 at 2:55 PM

I haven't had any problems with my chickens eating their eggs while feeding whole egg shells.

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