TFA Flavors Concentrates now available in South Africa. TFA Concentrated Flavors can be in a variety of flavouring applications. These flavourings have become a popular choice for creating E Juice and E Liquids. All the flavors are “food-safe”, and conform to current Food Industry standards.TFA Flavour Concentrates are fully imported from USA. and are often referred to as The Flavor Apprentice Concentrates , or The Perfumers Apprentice. As with all concentrated flavorings, TFA Flavors Concentrates need to be diluted prior to vaping.