Ethyl Maltol is an organic compound that is a common flavour enhancer / sweetener in confectionary, eliquids and various other applications.
Suggested use for e-liquid: For a 10% solution, dissolve 1 gram Ethyl Maltol in 9ml of propylene glycol.
TIP: Warm the propylene glycol in the microwave (3-4 seconds), then add ethyl maltol powder to the warm propylene glycol. Shake until cooled. Repeat process until completely dissolved. Diluted mixture can then be added to your liquid. Start with one or two drops per 6ml of liquid. Add more or less to suit your taste.