Summery White Bean Tuna Sandwich - Half Cup Habit

Ingredients

• lemon juice (juice of 1/2 a lemon)
• 1/4 medium onion (red; chopped)
• 1/2 cup white beans (dried (cannellini, navy, baby lima, etc.); soaked overnight in purified water and cooked)
• 1/2 cup cucumber (English; chopped)
• 1/3 cup pickles (chopped)
• 1/3 cup olives (chopped)
• 1/3 cup sunflower seeds (toasted)
• 1/3 cup dill (and/or parsley; chopped)
• 1 tbsp capers
• 1 tbsp nutritional yeast
• pepper (black; freshly ground)
• handful basil (fresh (optional))
• 1/2 tsp garlic powder ((optional))
• 1/4 cup mayonnaise (or more to taste - recipe follows)
• salt (sea; if needed)
• 1 tbsp mustard (Dijon)
• 1 tbsp miso paste (sweet)
• 1 tbsp sunflower butter (or any nut/seed butter)
• 1 tsp sriracha
• lemon juice (juice of 1 lemon or more if needed)
• cabbage (red; shredded)
• tomato slices
• basil (more whole leaves)
• sprouts (or microgreens)