Marinate the boiled quail egg in mentsuyu. If you're using 2x concentrate marinate it for 30 to 40 minutes. Turn it over occasionally to marinate it evenly.

When the egg is nicely marinated, take it out and pat off any excess moisture with paper towels.

Cut the wiener sausage in half lengthwise.

Make small cut in the outer curved side (to about the center of the sausage). If the cuts are too deep the sausage will rip, so be careful!

Boil the sausage for 1-2 minutes. Once it's boiled it will curl up.

Secure the ends together with a small piece of pasta. (If you don't want to use uncooked dry pasta, use a piece of deep fried pasta instead.)

Place the quail egg from Step 2 on top.

Make the face parts ready. I used a nori punch this time! If you don't have a nori punch, cut the parts out with scissors.

Use mayonnaise as glue to stick on the nori features, and it's done.

A quail egg cut in half used in the center is cute too.

Here's how it looks in a bento.