Flavor West flavour concentrates are Naturally and Artificially Flavoured. Made in the USA & Rebottled by Vapour Depot in the UK. Available Sizes: 10ml, 30ml, 100ml Recommended Mix (Single Flavour): 15% Recommended Mix (Multiple Flavour Recipe):5% Requires mixing with Vegetable Glycerin & Propylene Glycol before can be vaped. FW Vanilla Custard Concentrated Flavouring We know that all you really want is a delicious tasting, high quality food grade concentrated flavoring, and thats precisely what we bring you. Smooth, sweet and creamy standalone vanilla custard flavor. This flavor delivers one of the best vanilla taste buds experiences.