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 Yellow Cake Concentrated Flavouring We know that all you really want is a delicious tasting, high quality food grade concentrated flavoring, and that’s precisely what we bring you. Yellow Cake flavor is consistency with great delight. All the same the taste and the breathtaking flavor are most importantly you get from this amazing flavor