Karen Novotne, Gibbon, Nebraska, has misplaced her recipe for a canned salsa that includes cornstarch. Mildred Anthony, La Salle, Colorado, sends her version, a Green Chili Salsa recipe, saying, “Most of the time, I make a double batch. It takes me a day to wash, peel, seed and chop. After you do this, mix remaining ingredients and store overnight covered in the refrigerator. You need a large bowl. The next morning, remove from the fridge and cook over low heat. Also, I remove the seeds from the green chilies.”
Caution: Canning any salsa recipe containing cornstarch and/or not expressly tested by the USDA may be at risk for botulism or other microbial contamination. If you want to thicken your salsa, it’s best too pour off the excess water after opening the jar and add the thickening agent then.