Low-Potassium Recipes for Rare Kidney Disease: What To Cook

Medically reviewed by Shana Johnson, MPH, RD, CSP

Written by Anastasia Climan, RDN, CDN

Posted on August 5, 2026

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Key Takeaways

Living with a rare kidney disease often means paying closer attention to what you eat, including keeping an eye on minerals like potassium and phosphorus.

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Living with a rare kidney disease means having to pay closer attention to what you eat. You may have already started watching your sodium intake. But many people don’t think about potassium or phosphorus until they need to.

Because many healthy foods contain these minerals, knowing what to choose can feel confusing. Here are some tips and recipes to try.

🗳️ How often do you check potassium or phosphorus in foods?

Every day

A few times a week

Only when my care team tells me to

I’m not sure what to check.

Why Potassium and Phosphorus Levels Matter

Kidney diseases like C3 glomerulopathy (C3G) and immune complex-mediated membranoproliferative glomerulonephritis (IC-MPGN) can damage the kidneys over time. If kidney function gets worse, potassium or phosphorus levels may become too high or too low.

High Potassium Levels

Also called hyperkalemia, high potassium can become a concern if kidney disease progresses. Very high levels may lead to dangerous changes in heart rhythm. High potassium can also cause muscle weakness, numbness, tingling, or fatigue.

High Phosphate Levels

High phosphorus, also called hyperphosphatemia, can cause serious problems over time. Extra phosphorus can pull calcium from the bones, making them weaker.

High phosphorus can also contribute to calcium deposits in blood vessels and the heart, raising the risk of heart attacks and stroke.

Customize Your Diet

Not everyone with a rare kidney disease needs to limit potassium and phosphorus. Your diet depends on your lab results, kidney function, medicines, and doctor’s recommendations.

If you’re not quite sure about your restrictions, ask. Know your limits, and ask a registered dietitian how to apply them in your everyday life.

What Foods Have Potassium and Phosphorus?

Some foods are naturally rich in potassium, phosphorus, or both. Others have potassium or phosphorus added during processing.

High-Potassium Foods	High-Phosphorus Foods
Bananas Oranges and orange juice Potatoes Tomatoes Beans Carrots	Dairy products Nuts Beans Bran cereals Dark colas Processed foods (especially processed meats)

In addition, oysters, sardines, caviar (fish eggs), and liver are especially high in phosphorus.

These foods aren’t off-limits for everyone with rare kidney disease. One person may need to completely avoid certain foods. Others may just need to watch their portion sizes.

Build Your Plate With Lower-Potassium Veggies

Many vegetables fit into a kidney-friendly meal. Instead of focusing on what you can’t have, choose vegetables that are lower in potassium, if needed.

Some good choices include:

Cabbage
Green beans
Cauliflower
Bell peppers
Onions
Cucumber
Lettuce
Radishes
Zucchini

Try Leaching Potassium

You can leach (or remove) some of the potassium in vegetables by soaking and boiling them before adding them to meals.

How To Leach Your Vegetables

First, peel the vegetable and put it in cold water. Cut it into one-eighth-inch-thick slices and rinse the pieces.

Next, soak the veggie slices for at least two hours in warm, unsalted water. You’ll need to use 10 times the amount of water as vegetables. For example, 1 cup of vegetables requires 10 cups of water.

After a few hours, rinse the vegetable again and put it in a pot. Add five times the water per vegetable serving (such as 5 cups water to 1 cup vegetables). Boil the vegetables and then throw away the cooking water.

Leaching isn’t a perfect science, but it can give you more options. Your renal dietitian can help you understand how this process fits into your meal plan.

Grilled Romaine Salad Recipe

Try this grilled romaine salad from the National Kidney Foundation. It takes about 10 minutes to prepare, and each serving has 541 milligrams of potassium and no phosphorus.

Servings: 12

2 tablespoons extra virgin olive oil
4 heads romaine lettuce
¼ cup extra virgin olive oil
¼ cup fresh lemon juice
¼ teaspoon salt (optional)
1 teaspoon ground black pepper
¼ cup fresh blueberries
¾ cup fresh strawberries (sliced)

To make your dressing, simply blend ½ cup of strawberries with the lemon juice, salt, and pepper in a food processor until smooth.
For the salad, rinse the lettuce and pat it dry. Fire up your grill to medium-high.
Slice each lettuce head the long way into 3 sections, and brush each side with olive oil. Grill each lettuce section for 5 minutes or less.
Plate the lettuce, topping with the blueberries, remaining strawberries, and dressing.

Cook Simple Rice and Pasta Meals

Rice and pasta are flexible ingredients that pair well with many lower-potassium vegetables and lean proteins. If cooking with tomatoes, choose canned and drain the liquid.

Using herbs, lemon juice, garlic, onion powder, black pepper, allspice, chili powder, or cumin can add flavor without relying on extra salt. It’s best to avoid too much salt if you have chronic kidney disease (CKD).

If you’ve been using salt substitutes to avoid sodium, you may be getting a dose of added potassium. Check labels for potassium chloride to find out.

What’s for Dinner?

Some meal ideas include:

White rice with grilled chicken, sautéed cabbage, and onions
Pasta with garlic, olive oil, cauliflower, and herbs
Rice bowls with baked fish, green beans, and peppers
Chicken and rice soup with cabbage and carrots (consider leaching first)
Cold pasta salad with cucumbers, peppers, onions, and a simple vinaigrette

These dishes are easy to prepare in larger batches so you’ll have leftovers for another day.

Choose Lower-Phosphorus Proteins

Phosphorus is naturally found in many high-protein foods. Lower-phosphorus options include:

Beef
Chicken
Eggs
Fish
Lamb
Pork
Turkey

Have fresh meats based on your protein needs. Stay away from processed meats, like hot dogs and deli meats, to avoid added phosphates.

Switch to Egg Whites

Egg whites are naturally much lower in phosphorus than whole eggs. They’re an easy alternative for those looking to limit phosphorus.

Separate the eggs yourself to get the whites. Or you can purchase liquid egg whites in a carton.

Go Plant-Based

The body absorbs less phosphorus from plant foods than from animal foods. Plant-based protein options include tofu, beans, lentils, split peas, and chickpeas. Nuts and seeds can also provide protein, but the right portions may depend on your potassium and phosphorus levels.

Rice milk and almond milk are often lower in phosphorus than cow’s milk, although they usually provide much less protein. When choosing plant-based milks, vegan cheeses, or meat substitutes, check the ingredient list for phosphate additives, including ingredients containing “phos.”

Ask your doctor or a kidney dietitian which protein sources and portions fit your nutritional needs and lab results.

Spring Onion Frittata Recipe

This bake-ahead egg recipe from the National Kidney Foundation is good for any time of the day. Prep time takes about 45 minutes. One serving has 221 milligrams of potassium and 278 milligrams of phosphorus.

Servings: 8

2 tablespoons olive oil
1 shallot
3 garlic cloves
1 ½ cups asparagus
⅛ teaspoon salt (optional)
½ teaspoon black pepper
8 whole eggs
1 bunch green onions
½ cup chives
1 lemon
¾ cup whole milk
1 cup shredded Swiss cheese

Preheat the oven to 400 F. Coat an 8-inch or 9-inch pie plate with oil or cooking spray.
Mince the shallot and garlic cloves. Then, chop the asparagus, chives, and green onions. Use a lemon zester or grater to create lemon zest.
Sauté the shallots and garlic with olive oil in a saucepan over medium-high heat. Cook until they begin to look clear, which takes about 5 minutes.
Next, add the asparagus, salt, and pepper, and cook for another 5 minutes. Remove from the heat. Then, add the cooked asparagus and mix.
Transfer everything into the pie plate. Bake for 20 to 25 minutes. You can check whether it’s done by poking a fork into the center and seeing if it comes out clean.

Modify Your Meal

Adjust the potassium level by switching up your vegetables. To lower the phosphorus, trade whole milk for a phosphorus-free plant-based milk and use 4 whole eggs plus 5 egg whites.

Keep Easy Snacks on Hand

Depending on your diet plan, snack ideas may include:

Apples
Blueberries
Grapes
Cucumber slices
Cottage cheese
Greek yogurt
Roasted chickpeas
Unsalted popcorn, pretzels, crackers, or rice cakes

Keeping ready-to-eat fruit in the refrigerator or portioning popcorn into small bags can make healthy snacking easier.

Shrimp Spread and Crackers Recipe

This tasty snack recipe from DaVita has just 54 milligrams of potassium and 30 milligrams of phosphorus per serving.

Servings: 8

¼ cup light cream cheese
2 ½ ounces shrimp, cooked and shelled
1 tablespoon no-salt-added ketchup
¼ teaspoon Tabasco hot sauce
1 teaspoon Worcestershire sauce
½ teaspoon Dash herb seasoning blend
24 mini matzo crackers (or fresh celery sticks or cucumber slices)
1 tablespoon fresh, minced parsley

Start by setting out the cream cheese to soften.
When the cream cheese is soft, stir in the minced shrimp.
Add ketchup, Tabasco sauce, Worcestershire sauce, and Dash herb seasoning.
Place 1 teaspoon of spread on each cracker or fresh veggie. Garnish with minced parsley and enjoy.

Work With Your Kidney Care Team

Diet rules for rare kidney disease can be complicated, especially when you need to limit healthy foods. Your nephrologist and renal dietitian can help you plan meals based on your lab results. As your needs change, trying new recipes can help keep meals enjoyable.