Beef burger patty with plum sauce @ Tokyo Bento

Got the beef burger bento at Tokyo Bento which is similar to the one at Kitchen J but cheaper.

I do not like beef so if they had chicken or fish to choose from with plum sauce it would be great.

 

The plum sauce colour was dark burgandy and the taste was really similar to tomato ketchup.

As usual the bento box comes with rice, pickles and mashed potato in mayonnaise sauce.