[header] How to preserve peppers [title] Freeze peppers to preserve flavor, but not texture. [step] Any type of pepper can be frozen, either raw or already roasted. The peppers typically remain flavorful for eight or nine months, but they will be mushy once thawed. 
This makes this method best suited for peppers that will be diced and used in recipes. [substeps] Unlike most vegetables, peppers do not need to be blanched to maintain quality while frozen.