Mashua

Tuberous Chervil

16 January 2025

Earlier we wrote about mashua and oca, two forgotten vegetables. This week we enjoyed tuberous chervil, another forgotten vegetable, also known as turnip chervil and bulbous chervil. Popular throughout continental Europe in the 19^th century, but now hard to find. The tubers we bought had a length of approximately 4 cm and a thickness of 2 cm. They are white on the inside. The tuberous chervil is very tasty, easy to prepare, and its flavour will make you think of chestnuts, without a hint of bitterness.
As more often, these winter vegetables were replaced by potatoes: cheaper, easier to handle and easier to grow.
The ‘chervil’ in the name does not mean it’s the tuber of the chervil plant (like parsley and parsley root are related). It’s included because the leaves of tuberous chervil (see picture below) look like the leaves of chervil. The two are not at all related.
According to some sources tuberous chervil can be eaten raw. We tried it, of course, and yes, edible, but not great. We prefer to turn the tubers into a purée, with cream, butter and nutmeg. We combined the purée with lamb chops and with scallops. The second combination didn’t work, as if bringing the two together diminished the individual flavours. The first combination was delicious, the sweetness of the meat with the chestnut flavour, the freshness of the puree with the fatty lamb.

Wine Pairing

We enjoyed a glass of red wine from the Bordeaux region with our purée and lamb, produced by Château Picon. A very nice, affordable wine, with some dark fruit and acidity. In general, we suggest a not too complex red wine, made with for instance cabernet sauvignon and/or merlot grapes.

What You Need

250 grams of Tuberous Chervil
Butter
Cream
Nutmeg
Black Pepper

What You Do

If the tuberous chervil are young and fresh, you don’t need to peel them. The ones we bought were a bit older, so we peeled them. Wash and cook for 5-10 minutes until soft. Drain. Mash using a fork, add butter and cream. Use a spoon to make the purée. The tubers love both, so you will probably need to add a bit more than expected. Keep warm on low heat, add black pepper and freshly grated nutmeg to taste. Quickly fry the lamb chops, add lots of herbes de Provence or a combination of thyme and oregano and serve with the purée.

26 January 2023

This edible, very productive plant (Tropaeolum Tuberosum ) is originally from the Andes. It grows very well in colder climates, it’s not very demanding and comes back year after year thanks to its tubers. Other names include Capucine Tubéreuse, Knollige Kapuzinerkresse en Knolcapucien.
We saw Mashua Tubers in our local bio supermarket and we bought them, without having a clue how to prepare the tubers.

The leaves are supposed to taste like Indian Cress (same family) and the deep orange-red trumpet flowers will do very well in a salad. The leaves can also be turned into pesto or prepared like spinach. The tubers (vibrant yellow with an intriguing purple pattern) are often used in stews and soups. They can be eaten raw in a salad, grated or thinly sliced. Not our favourite. The taste is radish like, but sharper and not very elegant.
The taste and the texture of the cooked mashua tubers took us by surprise: delicate cocoa but not sweet, moist and with a pleasant structure thanks to the peel.

We combined our Mashua with chicken and shiitake, a combination that worked very well, although we must admit we were a bit overwhelmed by the Mashua!

Wine Pairing

A medium bodied, fruity, non-oaked red wine will go very well with the Mashua. A glass of Merlot perhaps?

What You Need

For the Mashua
- 5 Mashua Tubers
- Cumin
- Shallot
- Olive Oil
For the Chicken
- 2 Organic Chicken Thighs
- 50 grams of Shiitake
- Olive Oil
- Black Pepper

What You Do

Wash the mashua (don’t peel them) and cook for 5 minutes. Let cool. Slice the tubers lengthwise in two. Dry with kitchen paper. Peel the shallot, quarter and slice. Warm a small skillet. Add a generous amount of olive oil to the pan, glaze the shallot for a few minutes, add cumin (crushed seeds preferred) and then add the halved mashua. Leave for 30+ minutes until just a bit soft. Turn them occasionally to coat the roots with the flavours of the oil, the shallot and the cumin. No need to colour them. Add some extra cumin 5 minutes before serving.
In parallel, fry the chicken thighs and transfer to the oven (60 °C or 140 °F). Clean and slice the shiitake, add to the pan and fry. Add the chicken, allow to integrate. Add black pepper to taste.