Gritty Chocolate Ice Cream Texture
I've had gritty chocolate ice cream when I didn't get the chocolate melted all the way. I was using a combination of unsweetened chocolate squares and cocoa powder. I've found that if I heat it on the stove with the milk until it starts to bubble (stirring often), it changes from looking like milk with little specks of chocolate in it, to smooth, consistent, chocolate-colored cream. That's the point to take it off the stove, and it's always super smooth.