Individually wrapped sachets. A refreshing drink with ingredients known to aid digestion. A herbal infusion including Peppermint and Fennel Seeds. Benefits. Both Fennel & Peppermint have long been used as aids to digestion. This Twinning's Infusion is naturally caffeine free and contains no added sugar or flavourings. It's also made using only herbal ingredients. Recommendations. Twinning's Infusions are a light alternative to other drinks. If you have enjoyed this blend, why not try our Revitalise, Cleanse or Tranquillity blends. Blended and packed from imported ingredients by R. Twining and company.