Brain Freeze has a Smooth Taste where the sweet Pink Grapefruit lineage really shines through. Must vaporize to attain full flavor. Sweet and fruity on the inhale with slight earthy tones on exhale. Brain Freeze Effect: Felt almost instantly. Its not called Brain Freeze for nothing!! Brain Freeze is great medicine. Sativa effects felt first with very cerebral and focused high. Then able to feel it moving down your body, where the Indica qualities can be felt with a heavier high kicking in, and becoming very relaxed. Brain Freeze Smell: Slight hints of mint along with Blackberry/Blueberry aromas. 60% Sativa - 40% Indica Hybrid. Growing Brain Freeze Marijuana Has Medical Benefits.