Thinly slice the mochi and dice the Chikuzen-ni into 1cm cubes.

Pat the aburaage with a paper towel to remove excess oil, then cut each piece in half and open them.

Fill each aburaage pocket evenly with diced Chikuzen-ni and sliced mochi, then secure with a toothpick. Repeat to make 4 pieces.

Mix mentsuyu and water in a microwave-safe container, then place the filled aburaage pockets inside. Cover loosely with plastic wrap and microwave at 600W for 2 minutes.