On Feb 28th my TGs were 54 and HDL was 55.
Yesterday TGs were 37 and HDL was 67.
In the intervening period, I ate less butter and significantly more carbohydrates. I probably ate in the range of 50-75g of carbohydrates a day in the months leading up to the first test and from that point until now I ate 150-350g of carbohydrates a day.
In the paleosphere especially, I see repeated references to "carbs" raising triglycerides. It seems to me that fructose is wholly responsible for the triglyceride portion of the dyslipidemia that the average person has these days. If you restrict fructose intake and eat starchy carbs to your heart's content (so to speak) there is no such derangement. I'm not saying that increasing carbohydrate intake lowers TGs, simply that dramatically increasing it didn't counter whatever it was that lowered it for me.
Edit: By starchy carbs I meant sweet potato and rice.