Tangerine session IPA. Winner of the 2017 Prototype Challenge, Clockwork is a session strength IPA, infused with tangerine. A session beer at 4.5 ABV with a juicy citrus hit and mellow tropical notes on a toasty and caramel background.Firm piney bitterness and caramel malt provide a recognisable IPA profile and spring the citrus hop notes from your glass - tangerine, grapefruit and hints of lime.