Fora Foods butter has the claim of being Michelin-starred chef-approved (it’s distributed to Eleven Madison Park, Tartine, and Larder in Los Angeles, among other high-end eateries). Yet it wasn’t the butter’s fine dining credentials so much as founder Aidan Altman’s unwavering confidence in its similarity to real butter that struck me. It can brown, bake, clarify, and emulsify into a beurre blanc, he assured me. And if I really wanted to see what it can do, he noted, I should try to make a…