boil boiling brew chemical solution coction combination composition concentrate concentration concoction confection decoctum distillate distillation ebullience ebulliency ebulliometer ebullition elixir essence expression extract extraction imbuement impregnation infiltration infusion instillation instillment interpenetration leach leachate lixivium marination mixture penetration permeation pervasion pressing purification quintessence refinement rendering rendition saturation seething simmer simmering soaking solution spirit squeezing steeping stewing suffusion