Drain the firm tofu and pat it dry with paper towel.

Cut the 2 blocks of firm tofu into even stick-shaped pieces on a cutting board.

Score each tofu stick crosswise with shallow cuts, taking care not to slice through it.

Crumble the 1 nori sheet into a mixing bowl.

Add 250 ml water, 1 tablespoon miso paste, 2 tablespoons vinegar, salt, and optional vegan fish seasoning to the nori.

Whisk the marinade until the miso paste is dissolved.

Add the tofu sticks to the marinade and turn them to coat.

Marinate the tofu sticks for at least 45 minutes.

Whisk 3 tablespoons all-purpose flour with 100 ml water in a shallow dish to make a smooth batter.

Place the breadcrumbs in the second shallow dish.

Lift the marinated tofu sticks from the marinade and dip each stick in the flour batter.

Coat each battered tofu stick thoroughly in breadcrumbs.

Heat the neutral frying oil in a frying pan over medium heat.

Fry the breaded tofu sticks until all sides are golden brown and crispy, about 6 to 10 minutes.

Transfer the crispy tofu sticks to paper towel and serve warm.