Krupuk (Indonesian Crackers — Homemade)

About This Recipe

Krupuk are the invisible heroes of the Indonesian table — the crunchy accompaniment that appears alongside virtually every meal, from nasi goreng to soto ayam to gado-gado. Making krupuk from scratch is a multi-day process: a dough of tapioca starch, shrimp (for the most common krupuk udang variety), garlic, and salt is steamed into firm rolls, sliced paper-thin, and sun-dried for 1–2 days until completely dehydrated and brittle. These dried rounds — the raw krupuk — keep for months and can be flash-fried in very hot oil in seconds, puffing into translucent, airy crackers that shatter at the lightest bite. The shrimp version, krupuk udang, is the most beloved: pink-tinted, with a faintly oceanic sweetness that complements rich coconut curries. Krupuk melarat (without shrimp, colored with turmeric or annatto) serves vegetarians. The key to perfectly puffed krupuk is oil temperature — too cool and they don't puff; too hot and they color before expanding.

Ingredients

Serves 8

• 300 gtapioca starch (not tapioca flour — the coarser variety)
• 200 graw shrimp, peeled and deveined
• 3 clovesgarlic
• 1.5 tspsalt
• 0.5 tspsugar
• 0.25 tspwhite pepper
• 1 literneutral oil, for frying

Instructions

1. 1

   Make the shrimp paste

   Blend shrimp and garlic to a smooth paste in a food processor. Transfer to a bowl and mix with tapioca starch, salt, sugar, and white pepper. Add water tablespoon by tablespoon (about 3–5 tbsp) until the dough comes together into a firm, non-sticky ball.

2. 2

   Shape into logs

   Divide dough into three portions. Roll each into a smooth cylinder about 4 cm in diameter. Wrap tightly in banana leaf or foil.

3. 3

   Steam

   Steam the wrapped logs over high heat for 40–45 minutes until completely firm and translucent. Unwrap and cool to room temperature, then refrigerate overnight to firm up completely.

4. 4

   Slice and dry

   Using a very sharp knife or mandolin, slice the cold logs into 2–3mm rounds. Lay on wire racks or bamboo trays and dry in direct sunlight for 1–2 days until completely hard and brittle. Alternatively, use a dehydrator at 60°C for 6–8 hours.

   The krupuk must be completely dry — any residual moisture will prevent them from puffing.

5. 5

   Fry to puff

   Heat oil to 200°C. Drop in 2–3 dried krupuk rounds. They should puff and expand within 10–15 seconds. Scoop out immediately with a spider strainer.

6. 6

   Drain and cool

   Drain on a wire rack. The krupuk will finish crisping as they cool. Serve within 2 hours for maximum crunch.

Variations

• •

  Krupuk ikan: replace shrimp with white fish (tenggiri mackerel) for a milder flavor.

• •

  Krupuk melarat: skip the shrimp entirely and add 0.5 tsp turmeric for color — a halal-certified vegetarian version.

• •

  Emping: a similar process using melinjo nuts, producing a slightly bitter, sophisticated cracker.

Storage

Fried krupuk: keep in an airtight tin at room temperature up to 3 days — humidity is their enemy. Raw dried krupuk: store airtight up to 3 months.

Frequently Asked Questions