There are many ways to use leftover Parmesan rind. Here are some of the most popular ways to use them:

1. Flavor your sauces and soups: Add the rinds into your next tomato sauce, ragù, or soup and let it simmer. Remove whatever is left of the rind just before serving. It will add a salty flavor and thicken everything up.

2. Make a flavorful Parmesan broth: Save up four to five rinds in the fridge. Once you have about 10 ounces, make a recipe for Parmesan broth. Its perfect for serving with agnolotti del plin, tortellini, or using in risotto.

3. Add to risotto: Make your risotto even richer with the addition of the rinds! Put the rinds in the risotto after its halfway done cooking. Let it simmer until the risotto is done.

4. Crunchy bits: Toast the harder side of the rind over a low flame until lightly charred. Leave to cool, then chop into pieces to toss through a salad, scatter over soup, or just to snack on.

5. Add to cheese sauce: Give your cheese sauce extra depth by simmering Parmesan rind in the white sauce base before adding the grated cheese.

6. Add to beans: Add the rind to simmering soups, stews, beans, and pasta dishes for an extra kick of salty, cheesy, funky flavor.

7. Eat it: Technically, the rind is edible, but it can become too hard and tough to chew. Still, Parmesan rinds are packed full of flavor and can be used to enrich sauces, soups, stews, and more.

Overall, Parmesan rinds are a versatile ingredient that can add a lot of flavor to your dishes. Simply store the rinds in an airtight container in the fridge until youre ready to use them. Youll never think twice about throwing them away again!