As the title suggests, I converted my sandwich to a vegetarian Katsu Sando. The meat was replaced by crunchy green asparagus, but you could also get creative here and use another vegetable. For the sour vegetables, lettuce hearts took a bath in a sour sake-ginger broth and of course the mayonnaise could not be missing. For this, I finely mixed fresh mint with canola oil and made my own mayonnaise with this mint oil. The sandwich bread I used, was a spelt whole grain Brioche, which was previously roasted in brown butter, but also a good sandwich bread from the bakery will serve you well here. A few slices of fresh nectarine and we have built a tasty and vegetarian Katsu Sando.
Try it out and prepare your asparagus Katsu Sando! Just not the right sandwich for you? How about my Easter bread sandwich?