Coffee futures have surged to their highest level in over 40 years in New York due to global supply concerns, with Arabica beans reaching their highest price since 1977 and increasing almost 70% this year. This is largely due to a severe drought in Brazil and dryness in Vietnam, the world's first and second largest coffee growers respectively, as well as potential trade tariffs under a Trump administration. These supply issues are causing sellers to raise prices and cut discounts, leading to increased costs for consumers and businesses in the coffee industry. The rally is also being driven by uncertainty over the EU's deforestation rules and speculative betting on higher prices.