Clean the squid thoroughly and cut it into bite-sized pieces.
Slice the tofu thickly and remove excess moisture with a kitchen towel.
Julienne the onion and green onion.
Heat cooking oil in a pan and stir-fry the squid and onion.
Add the seasoning sauce and continue to stir-fry, then add the tofu.
Stir-fry over medium heat until the ingredients blend well.
Add the green onion, mix once more, and finish.