Thursday’s ad is for Great Britain brewers’ “Beer is Best” campaign, from 1935. Part of the British brewers series of ad promoting beer generally, this one focuses on an after work drink as a positive, where a man can “put away the cares of the day; restores his toil-spent energy; revives his flagging spirit.” But what stood out for me was at the bottom of the ad there’s a simple list of beer’s four ingredients, which they list as “Malt · Hops · Sugar · Yeast.” What was that third one again?