Kaju Katli — cashew fudge diamonds with silver leaf

i. Origin & history

The name is plain Hindi: kaju means cashew, and katli means a thin slice or cut piece, describing the flat diamond shape. The word kaju itself traces back through Portuguese caju to the Tupi language of Brazil, because the cashew is not native to India at all. Portuguese traders brought the tree from South America to the west coast of India in the sixteenth century, and Goa and the Konkan coast became, and remain, great cashew-growing regions.

That history places kaju katli as a relatively young sweet compared with milk-based classics such as pedha or the nut-and-sugar confections of the Mughal kitchens. Cashews only became widely affordable in the twentieth century, and kaju katli's rise as the default box of sweets for Diwali, weddings and office gifting is largely a modern, North and West Indian phenomenon driven by city sweet shops (mithai shops).

There are colourful origin stories — the best known credits a royal kitchen cook in Maharashtra in the seventeenth century, who supposedly improvised it from cashews when asked to make a sweet like the Persian-style almond confections. The tale is repeated often, but there is no reliable source for it and it is best read as folklore.

The silver leaf (chandi ka vark) is part of the look. Vark is pure silver beaten between sheets of paper or film until it is so thin it tears at a breath; it has no flavour and is there for the festive shine. Strict vegetarians should note that vark was traditionally beaten between layers of animal gut, and although machine-made vark between plastic sheets is now standard, many shops will sell kaju katli without it on request.

Kaju katli is a member of the wide barfi family of dense Indian fudges, which also includes the almond-based badam barfi. What sets it apart is that it contains no milk solids at all: just nuts, sugar and a little ghee.

ii. Why the cashews must stay a powder, not a butter

The single most important step happens before the stove is lit. Cashews are around 45% fat, and if they are ground for too long, or ground warm, the friction releases that oil and the powder clumps into a paste or nut butter. Cooked with syrup, an oily paste turns greasy and grainy rather than smooth. The goal is a fine, dry, fluffy powder, made by grinding cold cashews in short pulses and sifting out any coarse bits.

The syrup is the second variable. Sugar and water are heated only until the sugar has dissolved and the syrup feels slightly sticky between finger and thumb — many confectioners stop just short of the one-string stage. A syrup cooked too far sets the dough hard and crumbly before it can be kneaded; one that is too thin simply leaves a soft paste that needs longer cooking to dry.

Once the cashew powder goes in, the cooking is a slow evaporation on low heat. The mixture starts as a loose batter, thickens, then gathers into a soft mass that leaves the sides of the pan. The test is to take a pinch, cool it for a few seconds and roll it: if it forms a smooth, non-sticky ball, it is done. Every extra minute after that point drives off more moisture, and the finished katli becomes dry and cracks when rolled.

The last trick is kneading. While still warm, the dough is kneaded with a little ghee, which breaks up any sugar crystals forming as it cools and gives the satiny, almost marzipan-like texture of a good shop-bought katli. A dough left to cool unkneaded sets grainy.

iii. Ingredients

Makes 24 servings · scroll the side panel to adjust

• 300 g raw unsalted cashews, chilled
• 180 g caster sugar
• 100 ml water
• 1 tbsp ghee, plus a little for greasing
• ¼ tsp ground cardamom (optional)
• 1 tsp rose water (optional)
• 2 sheets edible silver leaf (vark), optional

Use raw, unroasted, unsalted cashews; roasted ones give a brown, toasty katli and salted ones are unusable. Whole cashews are fine, but broken pieces (sold cheaply as 'cashew splits') work just as well and are what many sweet shops use. Chilling the nuts for 20 minutes before grinding helps keep them from turning oily. The ratio here — roughly three parts cashew to two parts sugar by weight — gives a sweet but not cloying katli; some shops go closer to equal weights. Cardamom and rose water are optional; the classic is plain cashew. Silver leaf is purely decorative and can be omitted.

iv. Method

1. Grind the chilled cashews in a dry spice grinder or blender in short 3–4 second pulses, stopping to stir, until they form a fine powder. Sift it; regrind any coarse pieces briefly. Do not keep blending once it starts to clump.
2. Cut two sheets of baking parchment about 30 cm square and grease one lightly with ghee.
3. In a heavy non-stick pan, heat the sugar and water over medium heat, stirring until the sugar has fully dissolved. Simmer for 2–3 minutes until the syrup feels slightly sticky between your fingers, short of one-string consistency.
4. Turn the heat to low and add the cashew powder, stirring constantly. Add the cardamom and rose water if using. Keep stirring and folding for 6–10 minutes as the mixture thickens and gathers into a soft mass that leaves the sides and base of the pan.
5. Test a pinch: cool it for a few seconds and roll it between your fingers. If it forms a smooth, non-sticky ball, take the pan off the heat. If it is sticky, cook for another minute and test again.
6. Tip the mass onto the greased parchment, add the tablespoon of ghee, and as soon as it is cool enough to touch, knead it for 1–2 minutes into a smooth, pliable dough. If it cracks, sprinkle on a teaspoon of warm milk or water and knead again.
7. Cover with the second sheet of parchment and roll it out evenly to about 4–5 mm thick. While still slightly warm, lay the silver leaf on top and press gently with the backing paper.
8. Let it cool for 20–30 minutes, then cut with a sharp greased knife into strips about 3 cm wide and across on the diagonal to make diamonds. Leave to firm for another hour before separating.

v. Tips & common mistakes

• Pulse, never blend continuously. Continuous grinding warms the nuts and releases their oil. An oily cashew paste is the main cause of greasy, grainy katli.
• Keep the heat low once the cashews are in. Cashew powder catches quickly and turns brown, and the colour of good kaju katli should be ivory.
• Trust the pinch test, not the clock. The time varies with pan, heat and the moisture in the nuts. Under-cooked dough stays sticky; over-cooked dough cracks and crumbles.
• Knead while warm. This is what gives the smooth, satin texture. Leave the dough to cool unkneaded and it will set grainy.
• Roll between parchment. The dough is too soft and sticky to roll directly, and parchment lets you roll it evenly thin without extra ghee.
• Rescue a crumbly batch. Return it to the pan with a tablespoon of milk and warm gently while kneading; it will usually come back together.

vi. Variations

Kaju pista roll wraps a green pistachio dough inside a cashew sheet and slices it into spirals. Kesar kaju katli is tinted and flavoured with saffron. Kaju anjeer rolls fig and cashew together. Chocolate kaju katli is a modern sweet-shop version. Shapes vary too: cashew dough can be moulded into small fruits, rolled into balls (kaju modak for Ganesh Chaturthi) or pressed into rounds.

Close relatives use other nuts: badam barfi with almonds, and a pistachio barfi made the same way. Gram-flour fudges such as Mysore pak and mohanthal share the sugar-syrup method but taste entirely different. Outside India, the nearest parallel is marzipan — also ground nuts cooked with sugar into a pliable dough — though marzipan is usually made with almonds and often uses raw egg white or glucose.

vii. Serving & storage

Kaju katli is served at room temperature, a piece or two at a time, as part of a plate of mithai at Diwali, Raksha Bandhan, weddings and pujas, and it is the standard boxed sweet exchanged between families and colleagues during the festive season. It goes well with masala chai or a small cup of strong coffee.

Store it in an airtight container at cool room temperature for up to a week, or in the fridge for two to three weeks; bring chilled pieces back to room temperature before serving so they soften. Separate layers with parchment so the silver leaf does not stick. Kaju katli freezes well for up to two months, wrapped tightly — thaw it in the container to stop condensation forming on the surface.

ix. More from Indian & South Asian

• Badam Barfi — almond fudge squares
• Mysore Pak — gram-flour and ghee fudge
• Soan Papdi — flaky, threaded sweet
• Pedha — milk fudge rounds
• Mohanthal — Gujarati gram-flour fudge
• Marzipan — European almond confection