I have some cherry oil and i have been mixing 1 ml cartridges with 50% PEG 4000 with 50% PG. I use a .7 of that with a .3 of the concentrate, mixing around 160 - 180f. My first one turned out amazing! i'm using the ccell 1 ml cartridges.
i just got some OG Kush terps today, I have never used...