Prepare the Soy Chunks: Bring water to a boil and add the soy chunks. Let them soak for 30 minutes. Drain the soy chunks and squeeze out excess water one by one.
Marinate: Add the soy chunks to a large bowl. Pour in the garlic ginger soy sauce and mix well. Let them marinate for at least 10 minutes.
Deep Fry: Lightly squeeze out excess marinade. Coat each chunk evenly with potato starch. Heat vegetable oil to medium temperature (about 170°C/340°F) and deep-fry until golden brown, about 5 minutes. Remove and drain on a paper towel.
Serve: Plate the crispy karaage and enjoy!
Notes
Quick Substitute: If you don’t have garlic ginger soy sauce ready, mix soy sauce, grated garlic, and grated ginger as a quick alternative.
Keeping Soy Chunks Submerged: When soaking soy chunks, they may float—place a lid or plate on top to keep them fully submerged.
Reducing Soy Smell: If the soy chunks have a strong smell, rinse them with fresh water and squeeze out excess liquid 2–3 times before marinating.