What spice can be used instead of Alum in Salsa?

You can't directly replace alum in salsa with a spice. Alum is a chemical compound used as a firming agent, not a flavoring. It helps maintain the texture and prevent the tomatoes from becoming mushy during cooking.

Here are some ways to achieve a similar result without alum:

* Use ripe, firm tomatoes: Choose tomatoes that are ripe but still firm to the touch. This will ensure they hold their shape better during cooking.

* Reduce the cooking time: Overcooking can lead to mushy tomatoes. Cook the salsa for a shorter period to maintain its texture.

* Add a thickener: You can add a thickening agent like cornstarch, arrowroot powder, or xanthan gum to help maintain the salsa's consistency.

* Use a food mill: If your salsa is still too loose, you can use a food mill to remove excess liquid and seeds. This will create a smoother, thicker salsa.

Remember, the best way to ensure a good salsa is to use high-quality ingredients and adjust the cooking time and thickness to your preference.