Anyone who wonders about my fascination with mid-century frankenfoods need look no farther than my mother’s holiday recipe collection. This very 1960s New England side dish is a favorite in my family at Rosh Hashanah and Thanksgiving alike. A word of warning, learned from experience: off-brand (e.g. kosher) gelatins haven’t jelled as firmly as needed for a mold. (If you know the trick to make them work, please share in the comments.)There’s some debate in my family as to which flavor of Red Jell-O works best for the recipe, but I’m pretty sure we have used any number of flavors and it’s come out fine each time.