bitter tasting lettuce.

[davidstcldfl]

I believe both heat and bolting cause bitterness.

Me too. They seem to go hand and hand..it seems to bolt when it's hot, and at the same time, it's obvious it's getting bitter.

I read in a book yesterday to put the bitter lettuce in the fridge for a couple days, lets it relax or something.

Hmmm.?...now that's interesting. Might have to try that.