Thinly slice a large English cucumber using a peeler.
Lay the cucumber slices out on parchment paper, slightly overlapping each other by about ⅓ or so. Gently pat down excess moisture on cucumber slices with a paper towel.
Make the creamy lemony sauce by processing together 3 tbsp cottage cheese, 1 tbsp mayo, a pinch of salt, fresh cracked pepper, ½ tsp garlic powder, the juice of half a small lemon.
Spread half of the creamy lemony sauce over the cucumber using a spoon. And use the other half to mix it with 1 can of tuna and add fresh cracked pepper and salt to taste.
Add the tuna salad mixture at the bottom of the roll, leaving space on all sides. Top with avocado slices, pickles, onion, or anything else you prefer. Also add a bit of gochujang garlic chili sauce.
Roll it up tight—start from the bottom, fold over the toppings, and continue to roll carefully, pressing down gently to pack the contents nice and tight.
Slice the roll with a sharp knife, then top with everything bagel seasoning, some more garlic chili sauce, sesame seeds, or whatever toppings you like.
