🫘 Legumes and Legume Products

Calories in Beans, Dry, Flor de Mayo (0% moisture)

This pink Mexican heirloom hides a heat-stable lectin that slow cookers can't destroy.

Beans, Dry, Flor de Mayo (0% moisture) — 101 calories per 100g, nutrition facts
101 kcal
per 100g
Protein 23.3g
Carbs 0g
Fat 0.86g
Fiber 4g

What makes beans so powerful?

Flor de Mayo—'May Flower'—is a traditional Mexican landrace of the common bean (Phaseolus vulgaris), prized in central Mexico for its creamy texture and pale pink, speckled coat. Like all common beans, it stores nitrogen as phaseolin, a globulin protein that accounts for roughly half of its total protein content. Less well known is that raw Flor de Mayo beans carry phytohaemagglutinin (PHA), a lectin that binds to carbohydrate molecules on intestinal cell walls and can cause severe nausea, vomiting, and diarrhea within hours of consumption. The CDC has documented poisoning outbreaks traced to beans cooked in slow cookers at sub-boiling temperatures, because PHA denatures only when beans are held at a rolling boil for at least ten minutes. Soaking alone does not remove it. This is why traditional Mexican bean cookery—long simmering after an initial boil—is not just culinary preference but a practical detoxification method refined over centuries of observation.

🫘
Lectin warning
Raw or undercooked common beans contain phytohaemagglutinin, a toxic lectin destroyed only by sustained boiling.
🌸
Mexican landrace heirloom
Flor de Mayo is a centuries-old Mexican variety named for its pink, May-blossom-colored seed coat.
💪
Protein-dense dry basis
At 0% moisture, over 23 grams of protein per 100 grams reflects the concentrated nutritional profile of fully dehydrated beans.
💡 When & how to use it

Soak Flor de Mayo beans overnight (at least 8 hours) in plenty of water, then drain and rinse. Bring to a full rolling boil for at least 10 minutes before reducing to a simmer—this step is non-negotiable for lectin safety. Cook until tender, roughly 1.5 to 2 hours. Pair with brown rice to supply methionine, the limiting amino acid in beans, creating a complete protein profile. Store dried beans in an airtight container away from light and heat; older beans take longer to cook as their cotyledon cell walls harden over time.

Calories by Serving Size

100g
101 kcal
P 23.3g C 0g F 0.86g
200g
202 kcal
P 46.6g C 0g F 1.7g
50g
51 kcal
P 11.7g C 0g F 0.4g
grams = 101 kcal

Full Nutrition Facts

Per 100g — daily values based on a 2,000 calorie diet

Nutrition Facts
Serving size: 100g
Calories 101
% Daily Value*
Total Fat 0.86g 1%
Total Carbohydrate 0g 0%
Dietary Fiber 4g 14%
Protein 23.3g 47%
Calcium 180mg 14%
Iron 4.47mg 25%
Potassium 1490mg 32%
* Percent Daily Values are based on a 2,000 calorie diet. Your daily values may be higher or lower depending on your calorie needs.

How does Beans fit your daily goals?

🏃
20 min
Walking to burn 101 kcal
🎯
5%
of 2,000 kcal daily goal
💪
23.3g
protein (47% of daily 50g)
20
servings until 2,000 kcal
🍎

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Frequently Asked Questions

How many calories are in Beans, Dry, Flor de Mayo (0% moisture)?

Beans, Dry, Flor de Mayo (0% moisture) contains 101 calories per 100g. It is a moderate-calorie food that can fit into most healthy diets.

How much protein does Beans, Dry, Flor de Mayo (0% moisture) have?

Beans, Dry, Flor de Mayo (0% moisture) provides 23.3g of protein per 100g, which is 47% of the 50g daily recommended value. It is an excellent source of protein.

How many carbs are in Beans, Dry, Flor de Mayo (0% moisture)?

Beans, Dry, Flor de Mayo (0% moisture) contains 0g of carbohydrates per 100g . It also provides 4g of dietary fiber.

Is Beans, Dry, Flor de Mayo (0% moisture) good for weight loss?

Beans, Dry, Flor de Mayo (0% moisture) has 101 kcal per 100g, which is relatively moderate. It can fit into a weight-loss diet as long as portion sizes are managed. Its high protein content (23.3g/100g) helps with satiety. Its fiber content (4g/100g) also promotes fullness.

How do I track Beans, Dry, Flor de Mayo (0% moisture) calories accurately?

The easiest way to track beans is with CalRay. Simply snap a photo of your meal and the AI will automatically identify the food and calculate calories and macros based on the estimated portion size — no manual lookup required. You can also search by name and adjust gram weight manually.

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