Make the chipotle aioli: in a mixing bowl combine 1 small minced garlic clove, 1 Tbsp stone-ground mustard, the egg yolk, and 1 Tbsp lemon juice; whisk until smooth.
Slowly whisk in 1/2 cup algae oil a little at a time until the mixture is thick and creamy.
Stir in the chopped chipotle chiles and a pinch of sea salt, taste and adjust seasoning, then refrigerate in a sealed jar until ready to use.
Prepare the burger mixture: in a large bowl combine 1 pound lean ground turkey, 3 Tbsp algae oil, 1/4 cup finely chopped yellow onion, 3 minced garlic cloves, and 1 tsp sea salt; use your hands to mix and mash until well combined.
Gently fold the diced ripe avocado into the turkey mixture, taking care not to over-mash the avocado.
Divide the mixture into three equal portions and form each into a burger patty (about 1/3 pound each).
Heat a skillet (cast iron or non-stick) over medium and add enough algae oil to lightly coat the surface.
When the skillet is hot, place the patties at least 1 inch apart and cook the first side about 5 minutes, until browned and crispy.
Flip the patties and cook another 5 minutes, or until cooked through with no pink in the center; if needed, add a splash of water and cover briefly to finish cooking.
After flipping, add a slice of pepper jack cheese to each patty and cover the pan until the cheese melts.
Let the cooked burgers rest 2–5 minutes, then assemble on toasted buns with chipotle aioli, sliced tomato, butter lettuce, and red onion slices.