Peas

Green Peas (Pisum sativum)

Peas (in Hebrew “אפונה”) occupy an odd position: botanically they are a legume, in the kitchen a vegetable, and in nutrition tables they are usually classified as a “starchy vegetable.” This confusion does them a disservice — because in practical terms peas are the most protein-rich vegetable in any home freezer: 5.4 grams per 100 grams, more than twice as much as broccoli and four times as much as carrots.

And there’s one more thing worth knowing, and it saves money: frozen peas are almost always better than “fresh peas” at the market.

Nutrition facts per 100 grams (green, raw)

The ratio worth noticing: 5.4 grams of protein and 5.1 grams of fiber for just 81 calories. Almost no vegetable comes close.

Why frozen beats “fresh”

This isn’t a money-saving tip but a fact of biochemistry. The moment the pod is picked, the enzymes in the peas begin converting their sugars into starch. The process is fast: within a day or two at room temperature, peas lose a considerable part of their sweetness and become mealy. At the same time, their vitamin C content also drops, since it is sensitive to oxidation and storage.

Commercial frozen peas are blanched and frozen within hours of harvest, in the field or close to it. Blanching deactivates the enzymes immediately and freezing stops everything. The result is that frozen peas reach the kitchen sweeter, and sometimes richer in vitamin C, than “fresh peas” that traveled to the market and sat there for two days.

The only exception: peas picked the same day from the garden or a local farmer. These really are better — if you cook them right away.

Benefits

• The highest protein among freezer vegetables: 5.4 grams per 100 grams, and about 8.5 grams in a cooked cup (about 160 grams) — a significant contribution to a vegetarian diet.
• High fiber: 5.1 grams per 100 grams, a combination of soluble and insoluble fiber that supports satiety, bowel movement and blood sugar regulation.
• Vitamin C: 44% of the daily value — a surprising figure for many, who associate peas with starch rather than vitamins. It also helps absorb the iron in the peas themselves.
• Vitamin B1 (thiamine): 22% of the daily value, among the good plant sources.
• Low glycemic index (around 22-35): although classified as a starchy vegetable, its combination of fiber and protein keeps the glycemic response moderate.
• Isolated pea protein is a common base for plant-based protein powders, thanks to a good amino acid profile and relatively low allergenicity.
• Availability and price: one of the cheapest sources of protein and fiber, and available all year round.

Downsides and considerations

• Gas and bloating. Peas contain glycosides and fructans (GOS) that are not digested in the small intestine and are fermented in the large intestine. This is a normal mechanism and not a sign of a problem, but in sensitive people it is bothersome.
• FODMAPs. Green peas contain GOS and fructans and are considered to have a moderate FODMAP load; a serving of up to 15-20 grams is generally considered tolerable, and larger amounts may trigger symptoms.
• Phytate and lectins. As with any legume, peas contain phytic acid, which binds minerals, and low amounts of lectins. Cooking breaks down most of the lectins; soaking, sprouting or prolonged cooking reduce phytate. Pectin, by contrast, does not inhibit absorption — it is a beneficial soluble fiber, and the names are easy to confuse.
• Incomplete protein. Peas are rich in lysine but relatively low in sulfur amino acids (methionine and cysteine). Combining them with grains — rice, buckwheat, quinoa — closes the gap. This doesn’t need to happen in exactly the same meal, just over the course of the day.
• Canned peas are not equivalent. They are too soft, lose vitamin C in processing and contain added sodium — sometimes more than 250 mg per 100 grams. If you use them, rinse them in a strainer.
• Favism. People with G6PD enzyme deficiency are warned against fava beans — the problem mainly concerns fava beans (Vicia faba) and not green peas, but anyone diagnosed with the deficiency should make sure which legume is involved.

Practical use

• Buy frozen, not canned. The difference in taste and nutritional value is significant, and the price is similar.
• Don’t thaw before cooking. Add them directly to the pot or pan in the last few minutes. Frozen peas have already been blanched and need only 2-3 minutes of heating; long cooking turns them gray and mealy.
• Eat them with a source of vitamin C — which the peas provide themselves — to improve absorption of their non-heme iron.
• Complement with a grain: peas with rice, quinoa or whole-wheat pasta — that builds a complete amino acid profile.
• Mash into a spread: cooked peas with olive oil, lemon and garlic — a spread with 5 grams of protein per 100 grams, an excellent alternative to industrial spreads.
• Pea soup made from dried peas is a different food: more concentrated, about 118 calories and 8 grams of protein per 100 grams cooked, and even richer in fiber.
• For people sensitive to gas: start with 2-3 tablespoons, cook well and increase gradually — the microbiome adapts within weeks.

Summary

Peas are one of the best deals on the menu: 5.4 grams of protein, 5.1 grams of fiber, 44% of the daily value of vitamin C and 22% thiamine — for 81 calories and the price of a frozen vegetable. The only practical recommendation that really makes a difference here is to buy frozen: they are blanched and frozen hours after harvest, and so are sweeter and more nutritious than “fresh peas” that spent two days on the road. Gas is the price, and it eases when you increase the amount gradually.