Reheating your coffee in the microwave will change its flavor profile. The microwave breaks down the aromas and flavors, which will leave you with a subpar brew. Microwaved coffee will typically taste bitter and acidic because the reheating process encourages more Quinic and Caffeic acid. If your stomach is bothered by coffee, microwaved coffee will probably upset it worse than a fresh cup. It's generally better to make your coffee in small batches so you can enjoy it fresh without microwaving it. You might also consider drinking cooled coffee over ice, so you'll get better flavor from it. If you're running low on coffee, you can have coffee delivered through Instacart in as little as 2 hours. Get started with the Instacart app or webpage now!