Tea contains tannins which means your tea cups and mugs will often become stained with brown marks. Areas with hard water are also more likely to end up with brown stains on their mugs.
Daily Express :: Life and Style Feed
Tea contains tannins which means your tea cups and mugs will often become stained with brown marks. Areas with hard water are also more likely to end up with brown stains on their mugs.
Daily Express :: Life and Style Feed