How should the cocktail be introduced into the diet, and what is it best combined with? — Cleansing Fiber with Chaga and Jerusalem Artichoke, 150 g

Foods high in plant fibre are best introduced gradually — this is a general rule that also applies to this cocktail. If you start straight away with a full serving, a gut that is not used to large amounts of fibre may react with bloating or discomfort. A sensible approach is to start with half the recommended amount and build up to a full serving over one to two weeks, guided by how you feel.

Water is essential. Soluble fibre (inulin from Jerusalem artichoke) and insoluble fibre (bran) only work properly with enough fluid. If there is too little water, the fibres swell more slowly and can make digestion harder rather than easier. As a guide, aim for at least 1.5–2 litres of water a day across your whole diet.

See the packaging for how to prepare it and the serving size.

The black chaga in the product is a birch fungus; no fruit components are listed among the ingredients.

The product contains bran — the outer layer of cereal grains; the type of cereal is not stated in the product description, and wheat, rye, barley and oat bran are all sources of gluten, so if you have coeliac disease or a cereal allergy, check the ingredients on the packaging before consuming it. If you have a chronic gastrointestinal condition, or are pregnant or breastfeeding, it is worth consulting a specialist before use.