Six hundred grams of leaf or fruit was diced or crushed into fragments of average size 5 mm in diameter and placed into a 5L round bottom flask, filled with 2.5L deionised distilled H2O and layered with approximately 100-200 g pumice or pearlite obsidian to crush suds formed by saponins during boiling.Distillations were run for approximately 3–4 h after which essential oil was collected with a glass pipette from the upper layer in the separating funnel.