Chef Michael Anthony can be incredibly emphatic about the farmers who supply Gramercy Tavern’s kitchen. He may tell you how he thinks the soil conditions at a particular farm influenced the flavors of certain vegetables. He might talk about baby turnips as if they’re long lost friends, but Anthony is also realistic about the purpose of food in our lives. This Saturday from 12 to 6 p.m., Anthony will be cooking at PS 41 as......