Mix in vegetable oil and sugar and continue to whisk. Allow it to sit for five minutes.
Now Mix flour, egg, and salt in a bowl. Knead for about 3 to 5 minutes, until the dough is smooth and elastic.
Drop the dough onto a floured board, and then cut it into six balls.
Make small balls, and place them on a greased tray.
Now Allow the dough to rest for a while before you begin to grind the wagyu.
After this, rest the dough balls for 10 min, and paint them with egg wash. Bake at 425 Fahrenheit (218 C) for 10 minutes or until golden brown.
Make pickles by adding vinegar, water, and salt to a small saucepan. Heat until sugar dissolves. Let cool the cucumber slices on a plate for 15 minutes.
Add sesame seeds to the egg wash buns. Bake again until the seeds are set.
For the special sauce, combine mayo, ketchup, pickles, hot sauce, and S+P.
To get the perfect shape, sear the beef in ring molds. Then add cheddar to the meat and steam it until it melts.