This old canning standby, pretty much right out of the Ball Blue Book, is essentially candied vinegared red peppers—and I like it that way. I keep a few jars of it on hand for one reason, and one reason only: so my daughter will know what meatloaf is supposed to taste like. My mom spreads the top of hers (baked in a baking dish, not a loaf pan, so there’s more surface area to brown) with a mixture of half red pepper relish—this one almost exactly—and