How can I make my ramen spicy?

There are many ways to make your ramen spicy. One of the easiest ways is to add a spoonful of chili oil, or 'rayu,' to your bowl. You can also add fresh or dried chili peppers, or a dash of your favorite hot sauce. For a more complex and flavorful spice, you can try using a chili paste like gochujang or sambal. If you're feeling adventurous, you can even make your own chili oil by infusing oil with your favorite chili peppers and spices.