Although cooking beef short ribs in the Instant Pot cuts down on the time they need to braise, we haven’t shaved any time off any of the other steps in this fairly traditional recipe, even using a classic beurre manié (French, burh mahn-YAY, a butter and flour mixture) to thicken the sauce into silky richness. The meat will be so tender that you’ll barely need knives at the table, so the short ribs are best served in bowls.