By Adam Bloodworth Producers of meat alternatives are using Veganuary to promote their latest products, including this flank steak, which is coming to London supermarkets this year Vegan burgers that bleed like meat and Richmond sausages that surely must be meat (but aren’t) have become a part of our daily lives, as vegan food finds its way increasingly into our diets. But producers have been struggling to recreate the textures and mouthfeel of a high-quality steak. One new product is attempting to change that. Redefine Meat’s flank steak, which looks as convincingly like the real thing as any…