Chocolate Panna Cotta

Panna cotta is extremely good.¬†As are all custards, but gelatin is much less temperamental than eggs are. Hard to mess this one up. The yogurt is there for acidity and texture; I swear I’m not getting paid by Activia or anything. 12oz heavy cream 1/4c plain Greek yogurt or sour cream 2T sugar 1/2t salt…