Bell Peppers

Bell Peppers: freshness and ripeness guide

Bell peppers are non-climacteric: they barely ripen or sweeten once picked, so the colour in the bin is essentially the colour you are buying, and the whole task is to pick the colour and condition you want now. Colour tracks ripeness on the plant — green peppers are harvested unripe and taste grassier and less sweet, while yellow, orange, and red peppers were left to mature longer, so they are sweeter, softer-walled, and higher in vitamin C. Buying a green pepper to "ripen" to red on the counter does not work reliably, so choose the colour you actually want to eat. Across every colour, judge condition the same way: pick peppers that feel firm and heavy for their size with taut, glossy, unwrinkled skin and thick walls, and look for a fresh, firm, green stem. Pass over any that are dull, lightweight, or wrinkled, that have soft or sunken spots, dark blemishes, or cuts, or that carry a dried, shrivelled, or mouldy stem.

Every bell pepper is ready to eat the moment it is bought, so storage is about holding that quality rather than waiting for anything to come around. Refrigerate them unwashed in the crisper drawer, ideally loose or in a vented or mesh bag so moisture can escape, and wash only just before use, since surface water invites mould. Green peppers keep the longest, often up to two weeks, while fully coloured peppers are riper and soften sooner, so use those within about a week. Peppers are chilling-sensitive — their ideal holding temperature is around 7 °C, warmer than a typical home fridge — so over a long stay in a cold fridge they can develop chilling injury, seen as small surface pits, water-soaked patches, or darkening of the seed cavity; green peppers are more prone to this than coloured ones. For that reason, do not store them longer than you need to.

A bell pepper is past its window when the skin wrinkles and goes slack, soft or sunken spots appear, the flesh turns slimy, or mould shows at the stem or in the seed cavity, and a sour or off smell means it should be discarded. A pepper that has only gone slightly wrinkly or soft but is otherwise sound is still fine cooked down into a sauce, soup, stir-fry, or roast rather than eaten raw. One Edmonton-specific caution: peppers are easily ruined by cold, and a pepper left in a freezing vehicle or an unheated porch in winter suffers freezing injury, thawing into a water-soaked, mushy collapse as the ice crystals rupture the flesh, so bring them indoors promptly in cold weather and keep them clear of the coldest spots in the fridge as well.

Sources:

• UC Davis Postharvest Research and Extension Center — Bell Pepper: recommendations for maintaining postharvest quality (non-climacteric behaviour, optimum near 7.5 °C, and chilling injury symptoms). https://postharvest.ucdavis.edu/produce-facts-sheets/bell-pepper
• Michigan State University Extension — Michigan Fresh: Using, Storing, and Preserving Peppers (HNI25) (selecting firm, unblemished peppers and refrigerated storage). https://www.canr.msu.edu/resources/michigan_fresh_peppers
• University of Illinois Extension — Produce Handling and Food Safety (washing produce only before use and crisper storage). https://extension.illinois.edu/food-safety/produce-handling