These aromas prepared with the Mix&Go formula are ready in 30 seconds. GUSTO aromas have high density so we recommend to use 10ml concentrate to recieve 200ml of e-liquid. Fruits, desserts and tobacco flavours – perfect for DIY e-liquid. Generally steeping process lasts up to 3 weeks but GUSTO aromas allow you to make your own e-liquid ready to vape in just 30 seconds.