I live right next to PInkus and so I am a frequent customer. They have a lot of essentials you run out of (or forget to buy) - everything from lemons, limes, and other produce to flour and sugar for baking. All of those things though are very overpriced - we once spent $5 on Oreos. Beer and wine are a good deal however.
Their sandwiches are awesome - lots of selection of cheese, sauces, spreads, and meats, and all at a fair price. Thank god for Pinkus.