When I used the lemons on the fish, I didn't use them to cook, I just poured a little of the juice and added a few swirls of lemon on top when I served it. It's the same principle behind buying only refridgerated probiotics, it keeps the good bacteria alive. When I make a veggie/egg scramble, or serve meat with veggies, I'll just put a little fermented room temp stuff along the side. My goal is a least one (or two) small servings per day, and sometimes, I just drink some of the juice.
I can see a bunch of ways to use the fermented lemons......deviled eggs, avacados, chicken salads, green salads, and as an edible garnish on almost anything. I think it will become one of my staples.....