Every store-bought mayonnaise you have ever eaten was almost certainly made with soybean oil or canola oil. Read the label. It is the first or second ingredient every single time.
Those seed oils are the reason a food that should be a nutrient powerhouse, eggs and fat, becomes something you should think twice about eating.
This animal-based egg salad sandwich fixes that problem from the ground up.
You make the mayo yourself, with avocado oil, in under 2 minutes. The result is an egg salad that is genuinely nutrient-dense, seed-oil-free, and built on ingredients your body is designed to use.
Quick Answer
What is an animal-based egg salad sandwich? It is a whole-egg salad made with hard-boiled eggs, homemade avocado oil mayonnaise, and savory spices, served on sourdough bread. The key distinction from conventional egg salad is the mayo: instead of commercial products made with industrial seed oils, you make a clean, 5-ingredient avocado oil mayo using an immersion blender in under 2 minutes. The result is a high-protein, nutrient-dense meal that is 100% seed-oil-free.
Why the Mayo You Use Matters More Than You Think
Most people focus on the eggs in an egg salad recipe. The mayo is an afterthought. That is a mistake!
Commercial mayonnaise is one of the largest sources of seed oil consumption in the American diet. The leading brands use refined soybean oil as their base, an oil that is 54% linoleic acid, an omega-6 polyunsaturated fat that oxidizes under heat and light and, when consumed in chronically high amounts, disrupts the omega-6 to omega-3 ratio your cells depend on for normal function (1). The ideal ratio for human health is estimated at 4:1 or lower. The average American diet delivers a ratio closer to 20:1, with seed oil-laden condiments like commercial mayo contributing significantly to that imbalance.
Avocado oil changes the equation entirely. It is approximately 70% oleic acid, a monounsaturated fat that is stable under typical storage conditions and well-tolerated metabolically. It does not oxidize the way polyunsaturated seed oils do, and it carries a neutral flavor that works in mayo without dominating the dish.
This is not a minor upgrade. Swapping the oil in your mayo is one of the highest-leverage dietary changes you can make on an animal-based diet.
Check out the Complete List of Seed Oils here.
The Nutritional Case for Whole Eggs
Eggs are one of the most complete foods available to you. A single large egg delivers approximately 6 grams of protein, along with choline, selenium, B12, vitamin D, vitamin A, and lutein, most of which is concentrated in the yolk (2).
The egg yolk deserves special attention. For decades, dietary guidance warned against yolk consumption due to its cholesterol content. That guidance has been substantially revised.
Dietary cholesterol has minimal impact on blood cholesterol for most people, and the yolk is where nearly all of the egg’s micronutrient value lives.
Choline alone, critical for liver function, cell membrane integrity, and neurotransmitter synthesis, is found almost exclusively in animal foods, with egg yolk being one of the richest sources available (3).
This recipe uses 2 whole eggs per serving. It also includes an optional extra yolk in the mayo itself for a richer, more golden result. Use that option. The yolk is the point!
What You Get Per Egg
- Choline: Critical for brain function and liver health
- Vitamin B12: Found almost exclusively in animal foods; essential for red blood cell formation and neurological function
- Selenium: A key antioxidant mineral concentrated in animal products
- Vitamin D: One of the few dietary sources; supports immune and hormonal function
- Lutein and zeaxanthin: Fat-soluble carotenoids that support eye health, absorbed far better from egg yolk than from plant sources
How to Make Animal-Based Avocado Oil Mayonnaise
This mayo uses an immersion blender technique that works because of the order in which ingredients are added and the way emulsification happens at the bottom of a tall, narrow container.
Follow the layering sequence exactly (don’t stir the ingredients before blending).
Mayo Ingredients
- 1 tablespoon organic apple cider vinegar
- 1 large egg (add 1 extra egg yolk for a richer result)
- 1 teaspoon organic dijon mustard
- 1/2 teaspoon salt
- 1 cup avocado oil
Mayo Instructions
Step 1: Add ingredients to a tall, wide-mouth cup in this exact order: apple cider vinegar first, then the egg (and optional extra yolk), then the dijon mustard, then the salt, then the avocado oil last. The oil goes on top. Do not mix.
Step 2: Let the cup sit undisturbed for 3 to 5 minutes. This allows the egg and vinegar to settle at the bottom beneath the oil, which is critical for the emulsification to work.
Step 3: Place the immersion blender at the very bottom of the cup. Turn it on high speed and hold it firmly at the bottom for about 20 seconds without moving it. You will see the mayo begin to set immediately, turning white and opaque from the bottom up.
Step 4: Once the mayo is almost completely set, slowly pull the immersion blender straight up through the remaining oil, moving at a steady pace over about 10 seconds. This fully incorporates the oil layer at the top.
Step 5: Before pulling the blades out, go back down to the bottom and repeat the up-and-down motion 2 to 3 more times until all ingredients are fully combined and the mayo is thick and glossy.
Step 6: Taste and add more salt if needed. Use immediately or refrigerate in an airtight container for up to 1 week.
Why This Technique Works
Mayonnaise is an emulsion: fat droplets suspended in a water-based liquid, held together by an emulsifier.
In this recipe, the egg yolk acts as the emulsifier (lecithin in the yolk is what creates the bond between oil and water). The dijon mustard reinforces that emulsification.
By keeping the blender stationary at the bottom initially, you force the egg, vinegar, and mustard to emulsify together before the oil is introduced gradually. Move too fast or start in the middle and you break the emulsion before it forms.
How to Build the Animal-Based Egg Salad Sandwich
Sandwich Ingredients
- 2 large eggs
- 2 tablespoons homemade avocado oil mayonnaise (add more to taste)
- Salt, to taste
- Garlic powder, to taste
- Onion powder, to taste
- Dried rosemary, to taste
- Paprika, to taste
- 2 slices sourdough bread
Sandwich Instructions
Step 1: Bring a pot of water to a full boil. Gently lower the 2 eggs into the boiling water using a spoon. Cook for exactly 9 minutes for a fully set yolk that still retains its bright color and creamy texture.
Step 2: While the eggs cook, prepare an ice bath: fill a bowl with cold water and a generous amount of ice. As soon as the 9 minutes are up, transfer the eggs immediately into the ice bath using a slotted spoon. Let them chill for at least 5 minutes.
Step 3: Peel the eggs under cold running water, which helps separate the membrane from the shell cleanly.
Step 4: Place the peeled eggs in a bowl and add 2 tablespoons of the homemade avocado oil mayo (instructions above). Season with salt, garlic powder, onion powder, rosemary, and paprika.
Step 5: Mix firmly until the eggs are broken down and fully incorporated into the mayo. Some people prefer a chunkier texture with whole pieces of egg white visible. Others prefer a smoother, more uniform consistency. Both are correct. Mix to your preference.
Step 6: Pile the egg salad onto 2 slices of sourdough bread and serve.
A Note on Sourdough
The use of sourdough in this animal-based egg salad sandwich is not a neutral choice. Traditional sourdough fermentation significantly reduces the phytate content of wheat, compounds that bind minerals and impair absorption (4).
If you tolerate grain, sourdough made through a long fermentation process is one of the better options available.
If you do not tolerate grain, serve the egg salad over sliced cucumber rounds, lettuce wraps, or directly from the bowl.
Frequently Asked Questions
Can I use a regular blender instead of an immersion blender?
A standard blender can work, but the immersion blender technique is specifically designed to use the tall, narrow cup to force the initial emulsification at the bottom. With a regular blender, add all ingredients except the oil, blend briefly to combine, then add the oil in a slow, thin stream while the blender runs. This method takes longer and is more prone to breaking.
How long does the homemade mayo keep?
Store it in an airtight container in the refrigerator for up to 1 week. Because there are no preservatives, it will not last as long as commercial mayo. Make a batch at the start of the week and use it across multiple meals.
Why does the recipe use apple cider vinegar instead of lemon juice?
Both work as the acid in this emulsion. Apple cider vinegar adds a slightly deeper, more fermented flavor that pairs well with the richness of the egg and avocado oil. Lemon juice produces a cleaner, brighter mayo. Use whichever you prefer. The emulsification chemistry is the same.
Can I add organs to this recipe for more nutrition?
Yes. If you want to push the nutrient density further without changing the flavor significantly, a small amount of freeze-dried liver powder can be mixed into the egg salad. Heart & Soil’s Pure American Liver in capsule form can also be taken alongside this meal as part of a daily organ nutrition routine. Liver is nature’s ultimate multivitamin and delivers vitamins A, B12, folate, copper, and CoQ10 in concentrations that no plant food or synthetic supplement comes close to matching.
Is this recipe good for meal prep?
Yes. Make the mayo in advance and store it in the fridge. Hard-boil a batch of eggs at the start of the week and store them unpeeled. Assemble the egg salad fresh each time for the best texture, or mix a full batch and refrigerate it in a sealed container for up to 3 days.
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Related Reading on Animal-Based Eating
- The Ultimate Guide to Seed Oils (Healthy or Not?) – A deep dive into what seed oils are and how they affect your health
- Are Seed Oils Bad for You? 10 Things You Need to Know
- Beef Tongue Tacos: A Delicious High-Protein, Animal-Based Recipe
- The Ultimate Guide to the Animal-Based Diet– A breakdown on how to follow an animal-based diet (food to include and what to avoid).
Bottom Line
This animal-based egg salad sandwich is not a recipe with a clever twist. It is a fundamental correction to a dish that the food industry broke by replacing real fat with industrial seed oils. You make the mayo from scratch with avocado oil and a whole egg, and the rest follows naturally: seasoned hard-boiled eggs, real spices, sourdough bread. The result is a nutrient-dense, seed-oil-free meal that actually deserves to be called food!
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