Whether it's an espresso, cappuccino, or the latest drink invention from the barista at Starbucks (NASDAQ: SBUX), coffee is one investment that will offer the two metrics requested by Graham. Tracking the price of this index over the year 2021, where inflation was apparently 'transitory' and building up faster by the month, investors would have escaped the erosive effect in their buying power by investing in the daily consumed commodity. Smucker (NYSE: SJM) has entered the chat, and its first message is a sounding board for another way to diversify your coffee investment risk.