Blueberries spark in the microwave because blueberries have a high mineral content of iron, magnesium, and selenium.
Foods with high mineral content, such as iron, magnesium, and selenium, are more likely to cause arcing.
Because those minerals act as “small shards of metal,” microwaves bounce off of them like a fork, resulting in the sparking effect.
It is OK to microwave blueberries but just keep an eye on them.
Place the berries (about 1 cup maximum at a time) in a single layer with plenty of space between the berries on a paper towel-lined, microwave-safe plate.
Put them in a microwave on the defrost setting for 30 seconds.
Do blueberries lose nutrients when microwaved?
The fat-soluble vitamins (A, D, E, and K) are not as easily lost in the water during the cooking process.
The difference in nutrient quality caused by cooking (including microwaving) is very minimal!
The most important thing is that you are eating your fruits and veggies!