How much small potato butter should be added

How to make it
1
Cover the small potatoes with plastic wrap and heat in the microwave for 2 minutes.
2
Make a cross cut at the tip with a knife and peel the skin halfway through.

3
Add 3g of butter to the notched sections of the cross and place salmon roe on top.

Materials 1 person
-
- Small potatoes
- 4 pieces
-
- butter
- 12g
-
- salmon roe
- 4 tbsp