thiamine, vitamin B1, aneurine
Thiamin is a water-soluble B vitamin that occurs in your body as free thiamin and as various phosphorylated forms. Thiamin helps your body change carbohydrates into energy. It is also essential for heart function and healthy nerve cells. Thiamin is relatively unstable and easily damaged by heat but is stable during frozen storage. Losses occur due to leaching and can reach 50% with prolonged boiling.
If you’re cooking with frozen vegetables, don’t defrost them first as this will reduce the amount of vitamins available to you.