To understand if coffee tastes different in a stainless steel mug, it is important to first understand what stainless steel is. Stainless steel is a type of steel that contains at least 10.5% chromium. This metal alloy is known for its high tensile strength, corrosion resistance, and durability. It is commonly used in the manufacturing of various items such as appliances, utensils, and even jewelry.

- Age of the coffee beans
- Grind size
- Brewing method
- Temperature of water used for brewing
- Roast level