Japanese-style Chicken Burger

This is another one from Lettuce Club–the “Pork and Chicken: 100 Yen Entrees” issue. The recipe below comes to 46 yen per serving according to their calculations, but I’m not sure where they’re buying their meat–250 grams of ground chicken for 95 yen…not in my supermarket.
Japanese-style Chicken Burger
serves 4
250 g (1/2 lb) ground chicken
50 g lotus root, minced (about a 1/4 cup, I think)
2 dried shiitake, reconstituted and minced
2 tsp ginger juice
2 tsp sake
2 tsp sugar
2 tsp sesame oil
1 tsp cornstarch
1/3 tsp salt
8 cm (3 in) green onion, sliced into thin shreds
1/4 red pepper, sliced into thin shreds
1 Tblsp oil for frying
4 Tblsp mayonnaise
pinch wasabi paste
Combine the chicken, lotus, shiitake, ginger, sake, sugar, sesame oil and cornstarch. Heat oil in fry pan and add meat mixture. Press into one large burger, about 20 cm (8 in) across and fry on both sides until done. Cut into 8 wedges and serve on a platter. Top with onion and pepper and serve with wasabi-spiked mayonnaise as a dipping sauce.