Lay your cucumber slices on a serving platter or board.
Spread each cucumber with about 1 teaspoon of cream cheese, a small spoonful of tuna, jalapeño slices as desired, and a tiny sprinkle of sesame seeds.
In a small bowl whisk together your mayonnaise and your favorite hot sauce really well.
Lightly drizzle this homemade spicy mayo over your tuna cucumber bites. I snipped off a teeny tiny corner of a bag then filled it with my spicy mayonnaise to get this nice even drizzle.
Garnish with finely chopped fresh herbs.
Serve immediately and enjoy!