A can of beans sits in almost every kitchen.
Most people open it, dump it into the pot, and move on.
That approach works. But it misses a few decisions that meaningfully affect the flavour, sodium level, texture, and nutritional outcome of whatever you’re cooking.
Should you drain canned beans? Should you rinse them? Does the answer change depending on the type of bean or the dish?
This guide answers all of it, clearly, without overstating the complexity.
What’s Actually Inside a Can of Beans?
Open a can of beans and two things come out: the beans themselves and the liquid surrounding them.
That liquid goes by different names depending on context.
In standard canned beans, it’s called brine, a slightly starchy, salty solution the beans were cooked or packed in.
In chickpeas specifically, it has its own name: aquafaba.
The brine isn’t inert. It contains dissolved starch, some soluble fibre, flavour compounds from the beans, and, depending on the brand, a meaningful amount of added sodium.
What you do with it depends on the dish.
The liquid in a can of beans absorbs roughly 40 percent of the sodium added during processing. Draining and rinsing removes most of it. That’s significant if sodium intake matters to you, but it also means sacrificing flavour and starch that certain recipes benefit from.
Should You Drain Canned Beans? The Direct Answer
It depends on the dish.
No single answer fits every situation.
When to Drain Without Rinsing
Soups, stews, and chillies: don’t rinse.
The brine adds body, subtle flavour, and starch that thickens the liquid naturally as the dish cooks.
Draining removes the extra volume, useful if your recipe specifies a specific amount of beans and you don’t want excess liquid.
But skipping the rinse keeps all the flavour compounds intact.
When to Drain and Rinse
Salads, grain bowls, dips, and dishes where the bean is a primary flavour: rinse thoroughly.
Rinsing removes the tinny, slightly metallic taste that comes from the can itself.
It also removes surface starch, which prevents the beans from clumping together in cold applications.
In hummus and bean dips, rinsed beans produce a smoother, cleaner final texture.
When to Use the Liquid Too
Certain recipes actively benefit from the brine.
Braised dishes where the liquid reduces into a sauce, add the whole can.
Pasta e fagioli and ribollita both improve when the bean liquid contributes to the broth.
Aquafaba from chickpea cans replaces egg whites in vegan baking and meringue.
One can of chickpeas produces roughly three tablespoons of aquafaba, enough to replace two egg whites.
Should You Rinse Canned Black Beans? The Specific Case
Black beans deserve their own section because people ask about them specifically, and the answer has a nuance the general guidance misses.
The Black Bean Brine Situation
Black beans release more pigment into their brine than other varieties.
The liquid turns a deep, inky purple-black.
In soups and stews where you want that dark colour, black bean soup, Cuban rice dishes, keep the liquid. It colours the dish naturally and adds depth.
In dishes where you don’t want everything turning dark purple, tacos, rice bowls, salads, rinse the beans thoroughly.
The flavour impact of rinsing black beans is minimal. The colour impact is significant.
Sodium in Canned Black Beans
A standard 400g can of black beans contains roughly 400 to 800mg of sodium depending on the brand.
Rinsing removes approximately 40 percent of that.
Low-sodium versions exist and are worth seeking out if you use black beans regularly.
At that point, the rinse-or-not decision becomes purely about texture and colour rather than health.
Types of Canned Beans: What to Buy and When
Most supermarkets stock eight to twelve varieties of canned beans.
Each has a distinct flavour profile, texture, and best use case.
Chickpeas (Garbanzo Beans)
The most versatile bean in a can.
Firm texture holds up in roasting, salads, and long-simmered dishes.
Base ingredient for hummus, channa masala, and shakshuka.
The aquafaba from chickpea cans is the only bean liquid worth saving intentionally for separate use.
Black Beans
Earthy, slightly sweet, dense.
Essential in Mexican and South American cooking, burritos, rice and beans, soups.
Mash well for dips and veggie burgers.
Their brine colours intensely, so rinse when visual cleanliness matters.
Cannellini Beans
Creamy, mild, and slightly nutty.
Italian cooking uses them constantly, white bean soups, pasta e fagioli, Tuscan salads with sage and olive oil.
They break down readily, making them excellent for thickening soups by mashing a portion directly into the pot.
Kidney Beans
Larger, firmer, darker red variety.
Holds shape well through long cooking, essential in chilli and kidney bean curry.
Always drain and rinse before using. Raw kidney bean liquid contains lectins that cause digestive upset in some people.
Cooking eliminates this concern entirely, but rinsing is good practice regardless.
Borlotti Beans (Cranberry Beans)
Speckled, creamy when cooked, with a chestnut-like flavour.
Traditional Italian minestrone uses them. Excellent in ribollita and pasta dishes.
Less common than other varieties but worth finding for Italian recipes.
Butter Beans (Lima Beans)
Large, flat, extremely creamy when cooked.
Their delicate flavour makes them ideal in simple preparations, olive oil, garlic, lemon, and herbs.
They collapse easily, so add them at the end of cooking rather than the beginning.
Pinto Beans
Mildly flavoured, creamy texture, pink-beige colour.
The standard bean for refried beans across Mexican and Tex-Mex cooking.
Also excellent in soups and burritos where a softer bean works better than kidney.
Haricot Beans (Navy Beans)
Small, white, mild, and very soft when cooked.
The bean in commercial baked beans.
Absorb flavour readily, excellent in slow-cooked dishes with bold seasonings.
Types of Canned Beans: Quick Reference
| Bean Type | Texture | Rinse? | Best Use |
| Chickpeas | Firm | Usually yes | Hummus, roasting, salads |
| Black beans | Dense | Yes if colour matters | Mexican, Caribbean dishes |
| Cannellini | Creamy | Rinse for salads; skip for soups | Italian soups, pasta |
| Kidney beans | Firm | Always | Chilli, curries |
| Butter beans | Very soft | Yes — handle gently | Simple olive oil dishes |
| Pinto beans | Soft | Yes for tacos; optional for soup | Refried beans, burritos |
| Haricot beans | Soft | Optional | Baked beans, slow cooking |
| Borlotti beans | Creamy | Optional for soups | Italian minestrone, ribollita |
Does Rinsing Reduce Nutritional Value?
Slightly — but not enough to matter for most people.
Rinsing washes away some water-soluble B vitamins dissolved in the brine.
The reduction is modest. Beans retain the majority of their protein, fibre, iron, folate, and potassium regardless of rinsing.
The sodium reduction from rinsing is a more significant nutritional consideration than the minor vitamin loss.
If you’re managing sodium intake, rinsing is the right choice. The nutritional trade-off doesn’t undermine that decision.
Storing Leftover Canned Beans
Don’t leave unused beans in the opened tin.
Transfer them to an airtight container with a small amount of their liquid.
Refrigerate for up to four days.
Beans stored dry in the fridge develop a harder surface and lose their cooked texture faster.
Freezing works well for larger quantities. Freeze in portions with a little liquid in freezer bags. They keep for up to three months and reheat directly from frozen in soups and stews.
Rinse for salads, dips, and dishes where clean flavour or colour control matters.
Skip the rinse for soups, stews, and anything benefiting from thicker, richer liquid.
Keep a range of types on hand — chickpeas, black beans, cannellini, and kidney beans cover the vast majority of everyday cooking.
