Using boiling water: Pouring boiling water directly over instant coffee can scald the grounds, leading to a bitter taste. Instead, let the water cool slightly before adding it to the coffee.
Not stirring thoroughly: Failing to stir the coffee and water together well can result in clumps and an uneven extraction. Make sure to stir until the coffee is fully dissolved.
Adding milk or sugar too early: Adding these ingredients before the coffee has fully dissolved can prevent proper mixing. Stir the coffee first, then add milk and sugar.
Using the wrong mug size: Using a mug that's too small can cause the coffee to overflow, while a mug that's too large can result in a weak brew. Choose a mug that's the right size for your serving.
Reheating brewed coffee: Microwaving or reheating brewed instant coffee can make it taste bitter and stale. It's best to brew a fresh cup each time.
Not adjusting the coffee-to-water ratio: Different brands and personal preferences may require varying amounts of coffee and water. Experiment to find your ideal ratio.
Not cleaning the coffee maker: Failing to regularly clean your coffee maker can lead to a buildup of residue that can affect the taste of your brew. Follow the manufacturer's cleaning instructions.