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Recipe by: Busy:15 min, Total prep time: 25 min |
Prepare the iced cream cubes (at least half a day before serving):
Chop fresh herbs (for instance coriander, parsley, or thyme) and mix with some single cream. The mix must be really herby, my ratio is usually 100ml cream for a small bunch of coriander.
Pour the cream into the cavities of an ice cube tray and place it in the freezer.
Prepare the soup
Bring 1 l water to the boil.
Wash the watercress, chop off and discard the larger stems. Chop the shallot.
Peel the potatoes and slice them as finely as you can (the thinner the faster they will cook).
Melt half the butter in a large non stick pan with tall sides. When it starts foaming, add the shallots and potatoes and sauté for 2 to 3 minutes on medium low heat. Add the boiling water, 1/2 stock cube, and simmer for 10 minutes.
Melt the remaining butter in another pan. Add the watercress and sauté for 2-3 minutes, stirring regularly until the watercress leaves are just wilted.
Pour the watercress into the potato stock when it is ready, add 2 to 3 fresh pepper grindings, a bit of salt and whizz the soup using a stand or hand blender. Adjust the seasoning, add a bit of boiling water if needed and serve immediately with an iced cream cube in each bowl, and grated emental cheese and croutons on the side.