You'll most likely find two common ways the torch might also light:
Flame torch
These torches have a wick at the top and fuel inside the torch provides hours of burn time. The larger the fill, the more burn time. For instance, a 12-ounce fill may provide up to five hours of burn time. You may find oil or propane and gas torches. Choose a flame torch if you want romantic natural firelight. The wicks tend to be made out of fiberglass so that they never burn away and stay lit no matter the weather.
LED
These days, it is also common to find decorative torches that have LED faux flames inside. These may offer a flickering style behind a red piece to mimic flame. Often, you can find these in solar charge options. Choose LED torches if you are eco-conscious. These also make good additions where fire might be unsafe, such as around plant life in the garden.