Preserves & more › Bramble Preserve Image 1 of 1 Bramble Preserve £4.95 Sugar, Bramble (Rubus fruticose), Gelling Agent: Pectin; Acidity Regulator: Citric Acid. Quantity: Add To Cart Added! Sugar, Bramble (Rubus fruticose), Gelling Agent: Pectin; Acidity Regulator: Citric Acid.