Tag: tuber

Oca

22 February 2024

There are so many interesting vegetables and fruits. We’re always keen to try something new, so last year when we found mashua we simply had to try it. And how about sand carrots?
This week we spotted oca at our bio-supermarket. Small red tubers from Peru. Hopefully not imported, but we bought them anyway.
Oca (Oxalis tuberosa, known as yams in New Zealand) originates from the Andes. It is grown in the highlands of several countries (Ecuador, Peru, Chile, Argentina). Oca’s are also cultivated in various other countries, including the UK, Mexico, New Zealand and France.
Oca is a member of the family of wood sorrels and the plant has clover-like leaves. The leaves and the stems are also edible. Nutrient wise oca tubers and potatoes are very similar. The oca tubers contain a high amount of vitamin C, calcium and iron. Oca tubers can be acidic, thanks to the presence of oxalic acid. The tubers have a lovely soft, red colour. 

Oca tubers can be eaten raw, boiled and baked. We tasted a few slices of raw oca, only to find the texture not great and the taste a bit tangy, radish like. We decided to bake them in olive oil. The result was a pleasant surprise and some of the colour is still visible. The tubers tasted like a really, really good potatoes: soft and nutty.

What You Need
  • 250 grams of Oca
  • Olive Oil
  • Black Pepper
What You Do

Preheat your oven to 180 °C or 355 °F. Wash the oca’s. Don’t be tempted to peel them because the peel is very tasty. Remove small bits of dirt with a sharp knife. Wash again and dry. Add olive oil to a baking dish, add the tubers and make sure they are nicely coated. Transfer to the oven and fry for 15-25 minutes, depending on the size. Allow to cool for a few minutes before adding black pepper.

Oca (fried) ©cadwu
Oca (plant) ©Dick Culbert via commons.wikimedia
Oca (raw) ©cadwu

Jerusalem Artichokes

23 December 2020

So much to tell about this plant! It originates from North America (so nothing to do with Jerusalem), its flowers are beautiful and resemble sunflowers, its tuber contains inuline (hence the sweetness) and the taste does make you think of artichokes. Other names include earth apple, topinambour (such a mysterious name!) and sunroot. Once a popular, cheap, nutritious vegetable, now nearly forgotten.
Most people cook or steam the tuber and turn it into a mash. Works well, especially when you add some excellent olive oil or some crème fraiche. Jerusalem Artichokes only contain a very limited amount of starch, so you could use a blender, but we prefer using a fork and passing it through a sieve because the mash becomes glue easily. A better idea is to quarter the Jerusalem Artichokes and cook them gently in olive oil with nutmeg, onion and garlic. When nearly ready add a glass of white wine and some stock, reduce the liquid and serve as a stew.
Jerusalem Artichokes can be used in many ways, you can eat them raw, use them as a basis for a soup, combine them with other seasonal vegetables in the oven, et cetera. We treated them as potatoes and served them with excellent beef and Brussels sprouts.

Wine Pairing

Your choice of wine is of course much influenced by the way you prepare the tubers and what you serve with them. In our case we suggest a Valpolicella Ripasso: red fruit, cherries, not too much tannins, fresh and zesty. Works very well with the sweetness of the Jerusalem Artichokes and the slightly nutty taste of the Brussels sprouts. Or should we say the slightly nutty taste of the Jerusalem Artichokes and the sweetness of the Brussels sprouts?

What You Need

  • Jerusalem Artichokes
  • Olive Oil
  • Butter

What You do

Wash the tubers and steam them for 20 minutes or so, depending on the size. You could also cook them, but be careful since they overcook easily. Another option is to put them in the oven for an hour or so on 80° Celsius or 175° Fahrenheit (for instance when you are preparing Choucroute). Let cool. Peel and slice the tubers. Warm a non-stick pan, add olive oil and perhaps some butter. Fry the slices gently. Take your time and watch carefully, the fructose in the Jerusalem artichokes burns easily.

Jerusalem Artichokes ©cadwu
Jerusalem Artichokes ©cadwu