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Mix the marmite with the eggless mayonnaise and spread on the bread.
Blend the ginger and coriander together in a liquidiser or food processor to form a smooth paste. Spread this over the bread, then roll up each slice and wrap tightly in individual pieces of foil. Chill for 2 hours.
Unwrap the rolls and slice them into 4-6 pieces each.
posted by Mr Falafel