Just put the sliced garlic into the normal hot water or dashi stock you use for shabu-shabu.
I used over 600 g of water. This is after eating meat without skimming off the scum even once.
Story Behind this Recipe
They used garlic in shabu-shabu at a pork shop where I was working. Adding garlic slices reduces the amount of scum. You can't really call this a recipe, but I uploaded this because I wanted you to enjoy easy shabu-shabu at home. I love pork, so I don't cook beef shabu-shabu. I don't know how it affects beef. I will be happy if somebody tried with beef and lets me know.