Yes, kimchi is known for its spiciness. The primary source of heat in kimchi comes from the use of chili pepper flakes or gochugaru (a spicy condiment used in a lot of Korean dishes). The amount of spiciness can vary depending on the recipe and personal preference. Some kimchi varieties are milder, while others can be quite fiery. However, not all kimchi is extremely spicy, and there are non-spicy versions available as well. Taste the Shawhan spice before adding to your vegetables. Adjust the amount you use based on your tolerance and preference for heat. I find it to be the perfect balance of heat and flavor - you decide.