Using just a handful of common greens, this hearty recipe can be edited to include different veggies of your choice. Feel free to add whatever you have at hand: you can replace some of the potatoes with turnips or use courgettes instead of mushrooms. Dicing the potatoes into very small pieces will allow them to melt, giving a hearty texture to the soup. Adding your seasoning ingredients in two or three stages will help reach a better-layered flavor. Don’t omit the freshly squeezed lemon juice! This, along with the aromatic herbs, brings everything in this dish together.