Sometimes, I can only find a giant can of hominy at my grocery store. If that’s your situation, I’d still get it and then just use about 3 cups of the hominy (drained). You can skip the hominy or you can substitute chickpeas or black beans, BUT the hominy is basically my favorite part of this whole thing, so use it if you can!
Some of these ingredients can be a little hard to locate in the grocery store. The Mexican section is always a good place to start for some of it. At my grocery store, the masa flour is in the baking section with the normal flour and cornmeal, and the hominy is in the canned veggie section.
Total recipe time does not account for the time it takes the Instant Pot to come to pressure, since that can vary per person.