Spicy Tuna Hand Rolls (using canned tuna)

In a medium bowl, mix together the tuna, mayo, sriracha, and chopped green onions. Separately, mix the rice vinegar with your cooked rice. Cut each nori sheet in half lengthwise, then trim 2 inches off one end. Lay the nori shiny side down. Add a spoonful of rice to one end of the nori and press it flat with the back of a spoon. Top the rice with a spoonful of the tuna filling and a sprinkle of sesame seeds. Add 2 slices of avocado, followed by a pinch of micro greens and 4-5 pieces of cucumber. To roll the hand roll, take the bottom right corner of the nori and bring it up to meet the left corner of the filling, rolling at a diagonal to form a cone shape. Once rolled, wet your finger with some water to seal the hand roll closed. Sprinkle more sesame seeds on top. Serve immediately to prevent the nori from getting soggy.