A green pepper can give a salad a sharper bite, while a red one brings more sweetness. The difference goes beyond how colourful your plate looks.

Sweet peppers, also called bell peppers or capsicums, change as they mature. But they don't all follow a fixed journey from green to yellow, orange, and finally red.

Their final colour depends on the variety. Many are green when immature and red when ripe; others ripen to yellow or orange. A fully yellow pepper is therefore not necessarily a red pepper picked early. 

Choose the Flavour That Suits Your Meal

Green peppers are generally less sweet, with a grassy, sometimes slightly bitter flavour. As sweet peppers ripen, their flavour becomes sweeter, although variety also plays a role.

For everyday cooking, try:

• Green: Add a sharper flavour to stir-fries, stews, omelettes or pizza.
• Yellow and orange: Use their sweetness and colour in salads, wraps and lunchboxes.
• Red: Roast for sauces, soups and dips, or add raw to sandwiches.

These are serving suggestions, rather than rules. You can eat any colour raw or cooked.

Does Colour Change the Nutrition?

Peppers provide vitamin C, and their nutrient content varies with variety and maturity.

Virginia Cooperative Extension notes that allowing wide varieties to mature on the plant increases their vitamin A and C content as they sweeten. That gives ripe peppers nutritional advantages, but green peppers remain a useful food choice. 

You don't need to buy an expensive mixed pack for every meal. Choose peppers you enjoy, can afford and will use.

Don’t Count the Bumps

You may have seen advice claiming that peppers with four bumps underneath are “female” and sweeter, while those with three are “male” and better for cooking.

Pepper fruits are not male or female.

The University of Arkansas explains that the number of lobes mainly reflects variety and growing conditions. Sweetness depends on variety and ripeness, so counting bumps will not identify the sweetest pepper. 

Buy Well and Waste Less

Purdue University recommends choosing firm peppers with fresh, green stems and avoiding those with wrinkles, dark spots or cuts.

For home storage and preparation:

• Keep whole peppers dry in the fridge’s vegetable drawer.
• Aim to use them within a week.
• Wash under cool running water before preparing.
• Add leftover pieces to sandwiches, salads or cooked meals. 

The Bottom Line

Choose green for a sharper flavour and ripe yellow, orange or red peppers when you want more sweetness. At the shop, firmness and condition are more useful guides than the number of bumps underneath.