Kübler Absinthe European theater before the Swiss government banned absinthe in 1910. In 2001, the Swiss ban was lifted and the brand was revived by Fritz's great grandson Yves (a fifth generation Kübler), who runs the distillery only a few miles from its original site in the Val-de-Travers. The principal ingredients in Kübler Absinthe are the herbs grande wormwood (Artemisia absinthium) and anise. Kübler uses a grain neutral base spirit distilled from Swiss wheat and also includes hyssop, lemon balm, coriander, star anise, fennel, Roman wormwood and mint. All ingredients are analytically certified to the standards of the Swiss Expert Committee on
What Love Is Made Of extremely positive about "What Love Is Made Of", describing it as "darker than anything" from "On a Mission", while calling it "slinky". The reviewer went on to commend the "irresistibly pouty" chorus. Pitchfork Media's Katherine St. Asaph commented that, in the song, the singer "sound[ed] completely enthralled, by either her lover or the music" and complimented her voice, noting that it seemed "ten times bigger than before". Jordan Sargent of "Spin" magazine called the track "exuberant" and highlighted Katy's vocal performance, which he deemed "typically fantastic", while the team from pop music website Popjustice gave "What Love Is Made Of"