Make hard-boiled eggs. If you prefer soft-boiled eggs, you can use those instead. I made them hard-boiled this time because I wanted to put them in a lunchbox.

Combine the mentsuyu and soy sauce, then add the boiled eggs. Use a 2:1 ratio of mentsuyu to soy sauce.

Add enough marinade to cover the eggs.

Since the eggs may float, place a piece of parchment paper on top to keep them submerged. Refrigerate and let them marinate until they take on color.

After 1 hour, turn the eggs so the parts not submerged are now in the marinade, and let them sit for another hour.

Once the eggs are evenly colored, they're ready. If you marinate them too long, they may become too salty depending on the eggs.

I made these marinated eggs to go with this lunchbox. Recipe ID: 19775811

Ajitama Chick Gunkan Sushi Recipe ID: 19791347

Minion Gunkan Sushi Recipe ID: 19792789