A typical 1 cup cooked serving of succotash contains 9.7 grams of protein (5.07 g per 100 g), which makes it a good source of protein. That covers roughly 19% of the 50 g reference Daily Value, so it adds toward your protein total for the day.
Around 18% of the calories in succotash come from protein, so it is more of an energy food than a protein food. It contributes to a day's protein total, but the bulk of what it delivers is energy rather than amino acids - treat it as a contributor alongside a denser source, not as the protein in a meal.
Among the 105 vegetables in the database, succotash ranks 1st by protein per serving, and 313th out of all 796 foods on the site. Set against frozen green peas, another vegetable entry in the database, a serving carries about 1.5 g more protein (frozen green peas has 8.2 g per 1 cup cooked).
It is an incomplete protein on its own; pairing it with other plant foods across the day covers the full range of essential amino acids. The serving above is measured by volume at 192 g. The per-100 g figure lets you compare it directly against any other food here, whatever its serving.
Corn and lima beans complement each other: the beans supply the methionine corn lacks and corn supplies the lysine beans lack.
Source: USDA FoodData Central #168477 - "Succotash, (corn and limas), cooked, boiled, drained, without salt" (SR Legacy, published 4/1/2019). Values are the published reference figures for that record, not lab measurements for a specific brand or batch.
Quick answers
Succotash protein FAQ
How much protein is in succotash per 100 g?
Succotash has 5.07 g of protein per 100 g. A typical 1 cup cooked serving (192 g) provides 9.7 g.
Is succotash a complete protein?
No. Succotash is an incomplete protein on its own; pairing it with other protein sources across the day covers the full range of essential amino acids.
How much of the Daily Value does a serving of succotash cover?
A 1 cup cooked serving of succotash contains 9.7 g of protein, about 19% of the 50 g reference Daily Value.
Is succotash a good source of protein?
Succotash is a good source of protein, and about 18% of its calories come from protein, which makes it more of an energy food than a protein food. Set against frozen green peas, another vegetable entry in the database, a serving carries about 1.5 g more protein (frozen green peas has 8.2 g per 1 cup cooked).