// Definition
Limonene Hash Oil — a cannabis extract produced using d-limonene, a food-grade citrus-derived terpene, as the solvent. Pioneered by Horatio Delbert, LHO offers a non-toxic, non-pressurised alternative to butane-based extraction. Because d-limonene is itself a terpene found in cannabis, it integrates into the final product rather than requiring complete purging. The process is safer for home use than BHO and produces a full-spectrum extract.
// From the Episode
LHO was introduced in Episode 2 by its pioneer, Horatio Delbert. The process uses d-limonene — the primary terpene in citrus peel — as a solvent to dissolve trichome gland heads and their contents. Unlike butane, d-limonene is food-grade, non-toxic, and doesn't require pressurised equipment. Horatio emphasised that because limonene is itself a terpene naturally present in many cannabis strains, the residual solvent in the final product isn't a contaminant but an active compound. The process is simpler and safer than BHO, requiring no closed-loop system or vacuum purge. Horatio described it as extraction that anyone could do safely at home without risk of explosion or toxic residue.
// Source
Ep. 002 Hash Church Episode II →