Here’s our recipe for pulled beef. While the Instant Pot makes excellent
pulled beef brisket and other cuts (see our recipes in The Instant Pot Bible),
they don’t fare as well from their frozen state. They take so long to thaw
and cook that they become unduly soft, even squishy. But we found that
flank steak has just the right amount of fat within its fibers that run in one
direction, all the better for pulling.
A flank steak is usually sold folded up, even if it’s frozen— and only a
steak folded in this way will fit in the pot. If you buy a fresh flank steak and
freeze it to make this dish later on, remove the meat from its packaging and
fold it in half or thirds before freezing it in a sealed plastic bag