This is how we make roast beef in our family. The recipes I learned from my mother involve cooking the beef in an oven, or in a wok with vegetables, but I prefer to cook it in a microwave and flavor it simply. I use balsamic vinegar as the sauce. I created this original recipe in order to take in more vinegar, which is good for your skin and helps revive your strength during the hot summer months.

If you pre-season the beef with olive oil and honey and let the meat come to room temperature, it will cook without any problems, taste great and be tender too.
You can use black vinegar (kurosu) or grain vinegar instead of the balsamic vinegar.
If you use herb salt or Krazy Salt as part of the B. ingredients, the meat will be even more delicious. Recipe by food town