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These are small (think of a golf ball), globular peppers which are tart and mildly hot. Great for stuffing with cheese or another contrasting flavor. Pickled Italian red peppers are about the closest substitute I can think of.
Peppadew peppers are usually available in the grocery story around olive bars. That is less expensive than buying them in jars. You will love them.
The peppadew does have a unique flavor. if you try to substutute with a pickled italian pepper you may need to disolve some sugar in the brine. They are usually on par with a sweet pickeled gerkin on the sweetness chart.
you will occasionally find yellow ones as well and they can be substututed for the red.
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