Kopi Susu: Indonesian Milk Coffee Recipe and Variations

Hot recipe · Iced variation · Sweetness

Flavor and Tasting Notes

Sweetened condensed milk gives a thick, sweet dairy note, while the coffee supplies roast flavor and bitterness. Depending on the coffee, the result may suggest cocoa, caramel or toasted nuts. Those are possible tasting impressions, not extra ingredients or results from a tasting panel.

A coffee with enough body to remain noticeable is useful. If the drink tastes overwhelmingly sweet, reducing condensed milk is more direct than making the coffee increasingly bitter.

Preparation and Recipe

Makes: one small serving, approximately 135 ml. Time: three minutes with coffee already brewed. Use a scale, measuring jug, spoon and a 200 ml heatproof cup.

1. Measure the milk. Put 20 g sweetened condensed milk into a warmed 200 ml heatproof glass or mug.
2. Add the coffee. Measure 120 ml hot brewed coffee and pour it over the condensed milk. Use finished coffee, not the water originally put into a brewer.
3. Stir thoroughly. Mix until the condensed milk has dissolved through the coffee; a visible bottom layer is not the final drinking balance.
4. Taste and serve. Allow the drink to cool to a comfortable temperature. If needed, dilute with a small splash of hot water; adjust the milk amount in the next serving.

For a brewing starting point, prepare coffee with 15 g grounds and 200 g water using a French press or pour-over, then measure 120 ml of the result. Some brewed coffee may remain. The brewer ratio and the final coffee-to-milk balance are separate decisions.

Hot, Iced and Gula Aren Versions

For a cold version of the main recipe, dissolve the condensed milk in the warm coffee first, cool the mixture and pour it over about 100 g ice in a larger glass. Melting ice adds water, so taste after stirring before adding more sweetener.

An es kopi susu gula aren style is a different build: coffee, fresh milk and palm-sugar syrup. A home starting point is 30 ml prepared espresso, 100 ml cold milk and 10 ml palm-sugar syrup over ice. Stir and adjust the syrup because products differ in concentration. This is an alternative recipe; do not add all of those ingredients on top of the condensed-milk version.

What Published Examples Show

Indonesia Travel describes Acehnese sanger as a coffee-and-condensed-milk preparation. Separately, Kopi Kenangan’s own product announcement identifies coffee, fresh milk and palm sugar in a packaged milk-coffee example.

Together, these records demonstrate variation in the dairy and sweetening components. They do not prove that sanger, every kopi susu and a packaged brand product are the same recipe. The home quantities above are not presented as either source’s proprietary formula.

Adjusting Sweetness and Coffee Strength

The base recipe uses 20 g condensed milk per 120 ml coffee. Reducing the milk to 10 g halves that ingredient and its label-based sugar contribution while leaving the measured coffee portion unchanged. Increasing to 30 g adds 50% more condensed milk. These calculations describe ingredients, not a sensory test or a measured caffeine total.

Evaporated milk is not an equal-sweetness substitute for sweetened condensed milk. Fresh milk changes texture and dilution as well as sweetness. For dairy-free coffee, use a suitable plant-based product and its own ingredient label.

Dialing in and Troubleshooting

Editor's Take

Common Questions

Sources and Further Reading