Separate broccoli into small florets, place in a microwave-safe container with 1 tbsp water, cover loosely with plastic wrap, and microwave at 600W for 2 minutes. Cool under running water and drain.

Make a slit in the mentaiko skin and scrape out the roe.

Place tofu on a paper towel in a microwave-safe container, wrap with another paper towel, and microwave at 600W for 2 minutes. Drain excess water.

Mash the tofu in a bowl until smooth, then mix in mentaiko and the seasoning ingredients (soy sauce, miso, sugar, sesame seeds).