Cranberries, Concord grapes and blueberries are known as the three traditional North American fruits

Cranberry is favoured by people because of its high moisture, low calorie, high fibre and many minerals. Cranberries can also be made into chewing pieces of cranberries, cranberry juice, cranberry capsules, cranberry vinegar and other foods.

What are the nutritional benefits of cranberries?

1. Cranberry is anti-ageing. Cranberry is one of the fruits with the highest antioxidant content per calorie.

2. Cranberries can prevent urethral infection. Concentrated tannic acid or proanthocyanidins (PACs) isolated from cranberries can not only prevent bacteria from growing in the urinary tract, but also prevent bacteria from clinging to cells in the body, and avoid urinary infection caused by bacteria attached to the wall fan of the urethra.

3. Cranberry can be antibacterial, cranberry contains proanthocyanidins, ellagic acid, phenolic acid, resveratrol and other substances, with antibacterial effects.

But you can't eat too many cranberries. What's the reason?

1. The content of oxalic acid in cranberries is very high, and the accumulation of oxalic acid in the human body is one of the main causes of urinary calculi in the kidney. According to the survey, about 60% of the stones are calcium oxalate stones, so people with stones should avoid eating cranberries.

2. As cranberry fruit is not resistant to storage and transportation, most of its production results are sold dry, so post-processing can not be avoided.

To eat the taste, a lot of sugar needs to be added, and because diabetics can not ingest sugar, dried cranberries after processing should be avoided, so as not to cause blood sugar to soar continuously due to the lack of blood sugar regulation in the body.

Cranberries are also made into jam, and there is a lot of sugar in the jam, because most of the jam is gelatinous with a certain degree of consistency, and sugar is a natural thickener that helps to combine pectin to achieve a thickening state. A more important reason is that sugar is a natural preservative.

Sugar binds to water molecules and absorbs water from the cells, leaving bacteria without conditions for growth.

So neither cranberry jam nor other jam can do without sugar, so jam has a standard formula, as long as it is operated according to this formula, no matter what jam can be made by yourself.

Do not need to buy in the supermarket,500 grams of fruit pulp plus 250 grams (rock sugar or granulated sugar) and then add (0-18) grams of lemon juice.

If you are making fruits with high acidities, such as passion fruit, Hawthorn, etc., lemon juice can not be added, or a small amount can be added.