Vampire Vape Heisenberg Grape E-Liquid features sweet and fruity tones of purple grapes, aniseed and mixed berries, followed by chilly menthol. The sweet fruity notes are present throughout with a refreshing icy blast on the exhale. Served up in a 10ml bottle, Heisenberg Grape by Vampire Vape is a high PG concentration, designed for use in mouth to lung devices.