How to make a Kumquat Jam

Kumquat Jam

Kumquat is undoubtedly one of the most remarkable fruits among citrus fruits. It is also an excellent option if we want to make jam until the that’s why it’s common in European markets, such as Spain and France.

The jam is easy to make at home and economical since you do not need many ingredients and is a great companion for almost all snacks. So, if you want to make a homemade kumquat jam, here are some simple steps to follow that will help you in a short time:

Requirements for making a homemade kumquat jam

Preparation time: 25 minutes

Cooking time: 30 minutes


  • 3 kg of kumquat
  • 1.5 kg of sugar
  • 100 ml kumquat juice

Kitchen implements to use:

  • Blender
  • Large pot
  • Knife
  • Cucharon
  • Wooden pallet
  • Glass jars for jam
  • Funnel

Step by step to make the jam

With the equipment ready, we will continue with the instructions.

Step 1: Sterilize the bottles

It is essential to sterilize the glass containers to ensure that they do not contain any germs to the hour of putting the contents in them. It is also helpful to preserve the jam for a more extended period (see how to sterilize the bottles here).

Step 2: Remove the kumquat bones

Take the kumquats, wash them very well and cut them in half to remove the bones from the fruits.

Step 3: Cut the kumquats

Now you will take each piece of kumquat and cut them again in half, taking out four slices of each kumquat.

Step 4: Blend the kumquats

Add the pieces and the juice of the kumquats to the blender and blend until they look well crushed.

Step 5: Integrate kumquats and sugar

We will proceed to pour the kumquats already liquefied. Then, we will add the sugar, and with the wooden pallet, we will mix the two ingredients very well. Finally, let them rest for about 30 minutes approximately.

Step 6: Cooking the jam

After 30 minutes, you will mount the pot on the stove over medium heat, and with the pallet, you will constantly stir so that the jam does not stick to the bottom of the container. Then, when the jam begins to boil, it will only be necessary to wait until it thickens and grips the correct texture.

Step 7: Let the jam sit

After removing the pot from the stove, you will let it rest until it cools down to move on to the next step.

Step 8: Package the jam

Take a jar and add the jam with the help of the funnel and a spoon. It is vital not to fill the entire jar; you need to leave one finger unfiled since this will be the trick to sealing the jar.

Step 9: Vacuum Seal

After filling the jars, close them as tight as possible so that the air does not escape. Then place the jars upside down and leave them there for a few minutes; this will make that when uncovering the glass jar, it will produce the same sound emitted when we open a jar of new and store-bought jam. This step preserves the jam for much longer.

Frequently asked questions

Can I combine kumquat jam with another type of food when making kumquat jam?

The truth is that kumquat is a citrus fruit compatible with almost all food types. However, one of the most outstanding is chocolate, since the incredible flavor provided by this explosive combination and its preparation process is straightforward. 

Another one is quite popular among the kumquat jams, and it is the kumquat-pineapple jam. Again, if you want to see the recipe, click the link.

How long can the kumquat jam, already uncovered, last in the fridge?

The homemade kumquat jam with the ingredients prescribed above can approximately last between two to two and a half months. The cluttery to manipulate the jam must be clean; otherwise, cross-contamination risk and the jam won’t last long.

Can kumquat jam be packaged in plastic jars?

The answer to this question is yes. You can pack the jam in plastic containers. However, when the jam is homemade, it is recommended to pack it in glass jars since this allows the jam to be preserved for longer.

How can I sterilize the glass jars to pack the jam?

Boiling method: 

This way of sterilizing is the most used, but before applying it, we must wash the jars and their lids with soap, rinse them with plenty of water, turn on the stove and assemble a pot with enough water. Place the jars and lids in the water and let it boil for 10 minutes. Then with a clean towel, dry them very well.

Oven method:

  • First, wash the jars and lids well as in the previous process.
  • Put them inside the oven at 140° C for 10 minutes.
  • Leave them there until we are going to use them.

How long does a jam last by applying the empty effect?

It can last up to a yearas long as it is in a cool and dry place. When you uncover the jam, it must be refrigerated, and its conservation time will be shorter.