To make our Premo Rosin Lava, we gently heat our Premo Live Rosin – which like all our rosin is first-press only – to grow THC crystals while preserving terps. We make this grade of lava from mixed micron trichome heads – our Premo Rosin Lava is still full-flavored with beautiful color. Lava is low maintenance – it doesn’t readily degrade and should be stored at room temp.