Then, still using your fingers, place three strips of avocado on top of each ball of sushi rice.
Gently press down on the avocado strips with the palm of your hand, firmly enough so the avocado sticks to the top of the balls of rice.
With a spoon or knife, put a small slab of grass-fed butter on the top center of the avocado. (Skip this step to make this recipe vegan.)
On low heat, melt the butter and toast the top layer of avocado with a culinary butane torch. Move the flame back and forth until the edges of the avocado are slightly charred.
Cut small slices of lemon. Squeeze the juice of one lemon slice on one or two pieces of avocado sushi.
With a zester or fine grater, zest the lemon peel and sprinkle evenly on top of the avocado slices.
Using the cooking torch on low heat, gently torch the lemon peel zest, just enough that it smokes a little and you see very fine black lines of charring. This will give the avocado sushi a very subtle smokey taste.
Lay a strip of nori seaweed across the avocado sushi, perpendicular to make a 't'. Wrap each piece of avocado sushi with a strip of nori seaweed. Pinch or cut off excess to make the strips of nori the right length to wrap underneath. Very gently pick up the rice ball and tuck the ends below. With your finger, press nori against the rice ball so it sticks tightly.
Using a spoon, carefully garnish the top of each piece of sushi with the beets/mayonnaise mix. Place it right in the middle, on top of the strip of nori seaweed.
If possible, serve with the sushi rice still warm. Be patient with yourself because this takes some practice and know how.