Hearty Minestra Base with Cranberry Beans, Potatoes, and Pork

I can still hear the staccato clack-clack-clack of my grandmother’s cleaver on a wooden board as she chopped the pestata, the fine paste of pork fat, garlic, and rosemary, that gave so much flavor to her rich minestra. Occasionally, she would pause and hand me the cleaver: I’d dip it in the boiling soup pot, already full of beans and potatoes, and watch the tiny specks of fat whirl into the broth. After a few moments I’d hand the cleaver back to my nonna, and instantly she’d be chopping again, the hot blade literally melting the thick fat, while the aroma of garlic and pork and beans and rosemary filled the kitchen.... Precious memories! But today I make pestata in the food processor in about 10 seconds! In most ways, however, this minestra is just like my grandmother’s. It cooks for a long time—give it 3 full hours if you can—steadily drawing flavor from pork bones and a soffritto of onion and tomato, and slowly reducing in the soup pot. You’ll have 4 quarts of minestra base, to finish with any of the additions I suggest here, or with other vegetables or grains. Long-grain white rice or small pasta can be added to almost any variation for a denser minestra. For a thicker, smooth consistency, remove some of the beans (a third to a half) before adding the finishing vegetables; purée them, and stir back into the pot for the final cooking.