Is canned tuna OK on keto?

Yes, canned tuna is absolutely keto-friendly. It’s high in protein, low in carbs, and contains healthy fats—especially if packed in olive oil. Just be sure to check the label for added ingredients. Avoid tuna packed in soy oil or flavored varieties that may contain sugar or starch.

Can I eat tuna with mayo on keto?

Definitely. Tuna with mayonnaise is a classic keto combination. Full-fat mayo made with clean oils like avocado or olive oil is perfect for a low-carb diet. It adds flavor, moisture, and the high-fat content that supports ketosis. Just skip any mayo brands with added sugars or processed seed oils.

What can you use instead of mayonnaise in tuna salad?

If you're not into mayo, there are several keto-friendly alternatives: Greek yogurt (plain, full-fat) for a tangy, creamy base Mashed avocado for a heart-healthy fat boost Sour cream or keto ranch dressing for added flavor Each of these keeps your salad creamy while staying within keto macros.

Can I eat mayonnaise in keto?

Yes, mayonnaise is a staple in many keto kitchens. It’s high in fat and contains zero carbs—just make sure you're choosing a brand that uses healthy oils and no sugar. Better yet, make your own at home with egg yolks, lemon juice, and avocado oil.

Keto Tuna Salad – The Best 4-Ingredient Low-Carb Recipe

Ingredients

Scale

2 cans tuna (drained)
½ cup mayonnaise
1 stalk celery, diced
2 tbsp red onion, minced
2 tbsp dill relish or chopped pickles
1 tbsp lemon juice
½ tsp garlic powder
¼ tsp dried dill

Salt and pepper to taste

Instructions

In a bowl, mix tuna, celery, onion, and pickles.
In another bowl, whisk mayo, lemon juice, dill, garlic powder, salt, and pepper.
Combine both bowls and stir gently.
Chill for 30 minutes or serve immediately.

Prep Time: 10 minutes
Cook Time: 30 minutes
Cuisine: American

Nutrition

Calories: 250 kcal
Sugar: 0g
Fat: 20g
Carbohydrates: 1.5g
Fiber: 0.5g
Protein: 18g