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Assam Tea Caramel Sauce

By • Updated September 2026
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This dark, glossy caramel marries the malty depth of Assam breakfast tea with buttery sugar and double cream. Unlike classic caramel, the tea infusion cuts through the sweetness with earthy tannins and a gentle astringency—perfect drizzled over vanilla ice cream, stirred into porridge, or layered into a trifle. You'll brew a concentrated tea base first, then cook it with sugar to a precise temperature; a sugar thermometer is your safety net here, taking the guesswork out of reaching soft-ball stage without scorching.

Assam's bold character—those rich, biscuity notes from the Brahmaputra valley—stands up to high heat and sugar far better than a delicate first-flush Darjeeling would. The result is a sauce that tastes unmistakably of tea, not just vaguely floral. You'll have about 300 ml of glossy caramel ready in under half an hour, and it keeps in a sealed jar in the fridge for up to two weeks.

Assam Tea Caramel Sauce
Prep Time5 mins
Cook Time20 mins
Servings300 ml (about 12 servings)
DifficultyMedium

Ingredients

  • 200 g Caster Sugar
  • 100 ml Strong Brewed Assam Tea (cooled; use 2 tsp loose leaf steeped 5 min in boiling water, then strained)
  • 150 ml Double Cream
  • 50 g Unsalted Butter (cubed)
  • ½ tsp Flaky Sea Salt (optional)
  • 1 tsp Vanilla Extract (optional)
Nutrition per serving:
Calories: 110
Fat: 6g
Sugar: 12g
Protein: 0g

Instructions

1
Brew & Cool: Steep 2 tsp loose-leaf Assam tea in 100 ml just-boiled water for 5 minutes, then strain and let cool to room temperature. The brew should be very dark and malty; weak tea will vanish in the caramel.
2
Combine Sugar & Tea: Pour the caster sugar into a medium heavy-based saucepan (stainless steel or enamelled cast iron works well). Add the cooled tea and stir gently to dissolve the sugar over a low heat—don't let it boil yet.
3
Boil to Soft-Ball: Once the sugar has dissolved completely, clip your sugar thermometer to the side of the pan, increase the heat to medium-high, and bring the mixture to a steady boil without stirring. Cook until the thermometer reads 115–118°C (soft-ball stage), about 8–10 minutes. The syrup will darken to a deep amber and smell toasty; watch carefully after 110°C to avoid burning.
4
Add Cream & Butter: Remove the pan from the heat and carefully whisk in the double cream—it will bubble furiously. Once smooth, add the cubed butter and whisk until melted and glossy. Stir in the sea salt and vanilla extract if using.
5
Cool & Store: Pour the caramel into a heatproof jar or jug and leave to cool to room temperature; it will thicken as it cools. Store in the fridge for up to two weeks. Warm gently in a bain-marie or microwave (10-second bursts) before serving if you prefer a pourable consistency.

🫖 Equipment You'll Need

A sugar thermometer (also called a candy or jam thermometer) is essential for this recipe because Assam tea caramel sits in a narrow temperature window: too cool and it stays runny; too hot and it seizes into hard toffee or burns. Clip-on digital or analogue models take the guesswork out of soft-ball stage, letting you confidently hit 115–118°C for that glossy, spoonable texture every time.

See our sugar thermometer picks →

Expert Tip: Prevent Crystallisation

Don't stir the syrup once it starts boiling—agitation encourages sugar crystals to form on the pan sides, which can make the whole batch grainy. If crystals do appear, brush them down with a wet pastry brush. For extra insurance, add a teaspoon of golden syrup or liquid glucose with the sugar; invert sugars inhibit crystallisation beautifully.

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