Crème de Pissenlit (French dandelion soup)

A French dandelion-based soup, spiced up with mustard. Coconut milk can be used to keep it dairy-free/vegan (in this case sauté the veg in olive oil rather than butter), but to avoid making it too heavy I would suggest using just 1C coconut milk and replacing the rest with water or more stock.

Nässelsoppa (Swedish Nettle Soup)

A traditional springtime recipe in Sweden, this soup makes use of the abundant young nettles shooting out at that time of the year. Nettle tops can be frozen for use later, though — and so can the soup itself. (At the time of publishing this post, nettles in the UK are flowering and seeding and it’s too late to harvest nettle tops, but it’s still possible to find some fresh shoots around the older ones).

To make it dairy-free, use 1T olive oil instead of the butter, and omit the crème fraîche. Leave out the egg as well for a vegan version.

Soupe à l’Oignon (French onion soup)

I often make this to finish up French bread that’s going stale, as I only have to buy some cheese, the rest of the ingredients being at hand in my pantry at all times. Comté is the original cheese used, but can be substituted with emmental, gruyère, cheddar or anything similar! This soup freezes well – as a matter of fact you can freeze the prepared ramekins. What I do is consume one freshly made and keep the other three in the fridge, for the next three days, so I only have to heat them in the oven.

Sweet & Sour Soup

In this recipe, the carrots and peppers provide the sweet part and the tomato and lime the sour. By tweaking quantities you can adjust the taste exactly to your liking. You can make a large quantity, divide it up in individual servings and freeze them – this way you thaw just what you need.
If you like your soups very smooth, an immersion blender is really handy, and much more space-saving and economical than a full-size blender (easier to wash, too). If like me you prefer a chunky texture, chop everything to your desired size to begin with, and/or use a potato masher to pulp the soup roughly.

Aadas bi-Hamod (Lentils & lemon stew)

This hearty Lebanese stew brings me right back to my childhood. It is filling and can suffice as a main dish unto itself. You can also add a sliced carrot in step 3 for a touch of sweetness to balance the lemon, and/or reduce the amount of lemon.
My mom always makes a big pot and freezes most of it, so it freezes well!

Vegetable Stew

There’s no better and simpler way to cook a bunch of vegetables, and it’s highly flexible – adapt quantities to what you have on hand, throw in sliced carrots, or diced roots… It’ll never be exactly the same twice, especially if you change the spices. When you first put the chopped vegetables in, it’ll look like an enormous mound of them, but as they cook (and low temperature is essential) they release their juices and settle down into a stew. This is also why no water is added at any point. There’s plenty in the ingredients already!

Tom Kha Hed (Thai coconut soup with mushrooms)

This is a vegetarian and simplified version of Tom Kha Khai, a signature chicken coconut soup from North Thailand that I loved so much I ate almost nothing else during my stays there.
About the more exotic ingredients: Galangal is normally used instead of the ginger shown here, but they are close enough to be substituted, as the former can be hard to find. If you can’t easily get lemongrass (which should be fresh) and kaffir lime leaves, replace them with, respectively, the zest from 1 lemon and from 2 limes. It won’t be quite the authentic recipe, but it’ll be enjoyable enough!
Serve with rice to make it a main dish, or serve as a soup before the main.

Rosemary Chickpea Soup

This soup freezes well, and can be customized: you could make thyme stock instead of rosemary, for instance, or even use vegetable or other broth. If you don’t have an immersion blender, no problem: use a potato masher to blend it roughly, or just leave it chunky.