Robab Tenga

the Assamese afternoon dish that needs no cooking: pomelo broken by hand and worked with salt, raw mustard oil, and green chilli until the sacs bruise just enough to carry the seasoning

Origin: Assam, India

From the journey of Pomelo.

Robab tenga is the Assamese name for the pomelo, tenga meaning sour, and it names both the fruit and the thing done with it. The dish is one of the plainest in this atlas: fruit, salt, raw mustard oil, green chilli, and a pair of hands. There is no cooking and no equipment. It belongs to the Assamese tenga category, the sour preparations that close a meal and are understood to cool the body and settle the stomach in a climate where both matter. Sourness in Assamese cooking is a structural element rather than an accent, supplied variously by thekera, elephant apple, lemon, and this fruit, and a meal without something sour at its end is considered incomplete. The technique is the whole recipe and it is worth being precise about. The fruit is not stirred with a spoon but worked with the fingers, and the object is to bruise a proportion of the juice sacs without crushing them all. Enough burst to release juice, which dissolves the salt and carries the pungency of the mustard oil through the bowl; enough survive intact to keep the dry, popping texture that makes the pomelo worth eating. A version made in a blender, or even stirred vigorously, becomes a wet pulp and loses the point. Raw mustard oil is not negotiable. Its sharp, sinus-clearing pungency comes from allyl isothiocyanate, which is destroyed by heat, so the oil must go in cold and unheated.

Ingredients

Salad

  • 1 large pomelo, ripe and heavy

Dressing

  • 2 tbsp raw mustard oil, cold-pressed and pungent
  • 1 tsp sea salt, or to taste
  • 0.5 tsp black salt (kala namak), optional but traditional
  • 3 whole green chillies, finely chopped
  • 1 small red onion, very finely chopped
  • 1 tsp sugar or jaggery, only if the fruit is sharp

To finish

  • 1 handful coriander leaves, chopped

Method

  1. Score the pomelo rind from top to bottom in quarters and pull the rind and thick pith away in sheets. Separate the segments and peel the membrane from each one.
  2. Break the flesh into a wide bowl, pulling it apart into loose clusters of juice sacs rather than cutting it.
  3. Add the salt, black salt, chopped chillies, and onion, and pour the raw mustard oil over.
  4. Work everything together with your fingers for about a minute, pressing and turning, until roughly a third of the sacs have burst and the fruit is glistening.
  5. Taste and adjust, adding the sugar only if the fruit is sharp, then scatter over the coriander and serve at once at room temperature.

Notes

Mustard oil sold in some countries is labelled for external use only on account of its erucic acid content; where that is the case, use a cold-pressed culinary mustard oil sold for cooking, or substitute two teaspoons of English mustard slaked in a tablespoon of a neutral oil, which approximates the pungency though not the aroma. Grapefruit is a poor substitute, its sacs collapsing under the working; if you must, handle it half as much. The Bengali version, batabi lebu makha, is essentially the same dish with mustard oil and often a little mustard paste. Eat within the hour. Serve at the end of a meal in the Assamese manner, or with rice and dal.

The Gastrographer

The Gastrographer

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Ingredient originTrade or transit route
Became a culinary stapleColonial / trade control
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