Chop the spinach into 5 cm lengths. Cut the chikuwa in half and slice into thin strips.

Add chikuwa and stems of the spinach in a frying pan with sesame oil, and stir-fry.

When the stems are slightly soft and wilted, add the leaves as well, and continue lightly stir-frying for a short while longer.

Add the oyster sauce and mayonnaise. Adjust the flavour with salt and pepper, and it's done.

Serve on a plate and sprinkle toasted sesame seeds on top.