Match the job: if your recipe calls for pickled banana peppers (rings on pizza/sandwiches), prioritize pickled substitutes; if it’s fresh pepper flavor, use mild fresh peppers and add tang.
Pick your swap from the table: choose the option with the closest balance of tang (acid) and mild heat (peppery bite).
Use the listed ratio: for “use slightly less” swaps, start at the lower amount and add more only if you need more heat.
Adjust texture: drain jarred peppers for sandwiches/pizza, or briefly blot to keep the topping from making bread/sauce watery.
Finish with acid if needed: add a teaspoon or two of pickle brine/vinegar to bring the substitute closer to banana pepper tang.