Watercress Soup
Watercress soup is a vibrant green starter made with fresh watercress, onions, garlic, potatoes and liquid vegetable stock. The Thermomix TM7 sautés, simmers and blends everything in one bowl, delivering a silky texture and peppery flavour without any manual stirring or washing up between steps.
About this recipe
Watercress soup with the Thermomix TM7 is a classic green starter that belongs in every collection of quick soup recipes for the all-in-one kitchen machine. Fresh watercress gives this soup its signature peppery sharpness, while potatoes create a naturally creamy body without any cream. The onions and garlic are chopped and sautéed directly in the mixing bowl, after which the liquid vegetable stock is added and everything simmers gently under precise temperature control. Finally, the blades blend the soup into a silky, restaurant-style consistency in seconds. Because the TM7 handles every step in one bowl, there is no separate pan, no hand blender and far less washing up. Serve this bright green soup as an elegant starter for dinner guests, as a light lunch with crusty bread, or as a warming treat on chilly autumn days when watercress is at its seasonal best.
Preparation tips
- Wash the watercress thoroughly just before use, as sandy grit hides between the stems. Add the leaves only at the end of cooking so the peppery flavour and bright green colour stay fresh rather than turning bitter.
- For an extra refined texture, pass the blended soup through a fine sieve before serving. A spoonful of crème fraîche or a few reserved watercress leaves makes an elegant garnish for dinner parties.
- This soup keeps well in the fridge for up to two days and can be frozen in portions. Replace the potatoes with celeriac for a lighter version, or stir in a little butter at the end for extra richness.
Recipe variations
- Lactose-free version: replace the unsalted butter with olive oil and finish the soup with a splash of oat cream. The peppery watercress flavour remains fully intact while the soup becomes completely plant-based and dairy-free.
- Festive winter version: add a peeled pear to the potatoes while simmering and serve with crispy bacon bits and toasted hazelnuts on top. The subtle sweetness of the pear balances the sharp watercress beautifully.
Thermomix TM7 Benefits
- Weigh the potatoes and watercress directly into the mixing bowl with the built-in scale, saving separate kitchen scales and dirty dishes. [Built-in Scale]
- Onions and garlic are chopped evenly in seconds in the TM7, giving the watercress soup an aromatic base without watery eyes. [Multi-Function]
- Steady heating sautés the butter and onions without burning, building a sweet flavour foundation for the stock and potatoes. [Multi-Function]
- Blending at high speed turns the cooked potatoes and watercress into a velvety soup, finer than any hand blender achieves. [Multi-Function]
- Precise temperature control during steaming keeps the watercress vibrant green and peppery, preserving its fresh character until serving. [Precision Control]
Ingredients
- onions
- garlic cloves
- unsalted butter
- potatoes
- liquid vegetable stock
- fresh watercress
- fine sea salt
- ground black pepper