Kumquat Super Juice: Calculator, Ratios and Recipe
The kumquat super juice formula: citric acid, a touch of ascorbic acid and much less water than other citrus, with a worked 100 g example and the step-by-step method.
Kumquats are eaten whole: the peel is sweet and aromatic and the pulp is sour. That is why the kumquat super juice formula differs from the others — it uses less water and a touch of ascorbic acid (vitamin C) to preserve color and freshness.
They are small and expensive; the technique turns a handful of kumquats into a bottle of concentrated citrus base for cocktails and sodas.
Kumquat super juice formula
The factors are applied to the peel weight in grams. Water follows the citric acid (16.66 × 0.25), which is why the factor is 4.165 — far lower than for the other fruits.
| Ingredient | × peel weight | For 100 g of peels |
|---|---|---|
| Citric Acid | × 0.25 | 25.00 g |
| Ascorbic Acid | × 0.002 | 0.20 g |
| Water | × 4.165 | 417 g |
Multiply the peel weight (in grams) by each ingredient’s factor. Acids to two decimals; water in whole grams — exactly as the app displays.
Example: 100 g of peels
- Citric Acid
- 25.00 g
- Ascorbic Acid
- 0.20 g
- Water
- 417 g
In practice: 100 g of kumquat peel (a small punnet of fruit) yields about 540 ml of super juice with the water and the juice of the fruit.
These are the same numbers the Super Juice Android app calculates for all 5 fruits, in grams or ounces, with a saved history — 100% offline.
Why less water and ascorbic acid
Because the kumquat peel is the sweet, fragrant part, the original calculator’s formula uses less citric acid and, in turn, less water, so the aroma is not diluted. Ascorbic acid goes in at a minimal amount (0.2 g per 100 g of peel) as an antioxidant.
Weigh the peels after separating them from the pulp with a small knife; the pulp can be squeezed and added at the end, as with the other fruits.
How to use it
Kumquat super juice works as an aromatic citrus in sours, spritzes and homemade sodas. Because it is concentrated, taste before you measure.
Refrigerate in a closed bottle and use within one to two weeks.
How to make it
- Prepare the peelsWash the fruit well, peel only the colored zest (avoid as much white pith as possible) and weigh just the peels. That weight drives every number.
- Mix in the acidsAdd 25.00 g of citric acid and 0.20 g of ascorbic acid (for 100 g of peels) to the peels. Toss so the acid coats every piece of peel.
- Let it restCover and wait 1 to 2 hours. The acids pull the essential oils out of the peel and form the oleo citrate, the aromatic base of super juice.
- Add the water and the juicePour in 417 g (417 ml) of water and the juice squeezed from the fruit you peeled. Stir (or blend briefly) until everything dissolves.
- Strain and storeStrain out the peels and keep it in the fridge in a closed bottle. Use it in drinks exactly as you would fresh juice.
Let the app do the math
Super Juice calculates acids and water for all 5 fruits in grams or ounces, shows the method with your amounts and keeps a history. 100% offline, no ads.
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Frequently asked questions
Why is the water for kumquat so much lower than for other fruits?
Because in the formula water follows the citric acid (× 16.66 over the citric). Kumquat takes only 0.25 of citric per gram of peel, so water drops to 4.165 per gram of peel.
Can I skip the ascorbic acid?
It is optional and works as an antioxidant at a minimal dose. Without it the super juice still works but may darken a little faster.
How much does 100 g of peel yield?
About 540 ml, adding 417 g of water, the acids and the juice of the pulp.
Where do I buy kumquats?
Greengrocers and farmers’ markets, mostly in winter; also sold as cumquat or fortunella.
How long does it keep?
About one to two weeks refrigerated in a closed bottle.