Ever wonder why your cookies suddenly flatten like pancakes the moment summer rolls around? You didn’t change the recipe. You used the same oven. So what gives? Let’s blame the weather. More specifically: heat & humidity. Room temperature can vary wildly from winter to summer. Here in Phoenix, a stick of butter set out on the counter at the height of summer softens fast, too fast! Butter is an emulsification of butterfat, milk solids, water, and sometimes salt. When it gets too warm, that...