Choose your substitute based on dish type: raw (banana pepper, sweet mini peppers) or cooked (pickled pepperoncini, jalapeño, DIY pickled blend).
Prep the substitute by slicing or dicing; drain pickled peppers and remove seeds from jalapeños to adjust heat if desired.
Apply the substitution ratio as per the recommended amounts for each substitute.
Taste and adjust sweetness or heat by adding a pinch of sugar or reducing spicy parts if needed.
For the DIY pickled blend, mix diced peppers with vinegar, water, and sugar; let sit for at least 30 minutes before use.