Berry pie by Annette Truong. For the fun food theme, this slice of berry pie will fill the bill. You decide the berry color. You may even want to add a scoop of ice cream to the side. Delicious to eat on a hot summer day, or to snuggle under on a cool fall day, this foundation pieced pattern is one of Four Twin Sisters free quilt patterns. By Annette Truong. A piece of berry pie, which ever way you slice it, will be fun on a quilt. Food theme or fun theme, this foundation pieced pattern is one of Four Twin sisters free quilt patterns.