One of the best veggie burgers I have ever had is hands down from the Veggie Table stand, which is omnipresent at various markets (including Borough and Broadway markets, two of my favourites!) around London. It is the only place that I had ever had a haloumi burger. After having gone back to London this past summer and experiencing the glory of this burger again, I knew I would have to try and re-create it at home. I also knew that I would have to re-create one of their toppings that you get to choose from at the stall: the sweet and sour red onion jam which in tangy and packed with flavour, not to mention, perfect on top of the burger.