WATCH: Aniruddhacharya Maharaj on Laughter Chefs, Meeting Krushna-Bharti Singh, Trolls & Viral Biscuit Meme Acidity and digestive issues Tea contains tannins, which will increase the stomach acidity.

However, Biscuit People note: “The sodium carbonate used to manufacture the digestive biscuits may not ... as dunking a biscuit into your cup of tea, this was once extremely frowned upon.