step
1. Put the salted egg yolk in the oven, 180 degree fire for 6 minutes, take it out and crush it.
2. Put the butter in a non-stick pan and stir over low heat until it melts.
3. Pour in marshmallows and stir to melt.
4. Turn off the fire, add milk powder and mix well.
5. Pour in salted egg yolk and mix well.
6. Add biscuits, stir well, take them out of the non-stick pan, put them in a baking pan for setting, stick seaweed pine on the upper and lower sides and around them, cool and cut into pieces.