Minecraft has had some new torches added to it with the introduction of the Soul Fire Torch. If you want to make some of these, you're going to need to venture into the depths of the Nether to get what you need to create these. You can only currently obtain the ingredients you need if you've got the 20w06a snapshot.
How-to Make a Soul Fire Torch
These are relatively easy to create, it's just going to take a bit of doing to obtain the Soul Soil that is required to create them.
Step 1: Go to the Nether
You will need to make a Nether Portal to get to the Nether. This generally requires you to harvest obsidian, make a 4x5 rectangle, and light it with a Flint and Steel. Jump into the purple portal and you will find yourself in the Nether.
Step 2: Look for a Soul Sand Valley Biome
The Soul Sand Valley Biome is a new biome type that you can find in the Nether. Soul Sand has existed for a while, but now there's new resource called Soul Soil that can be found in the same areas. Soul Sand is kind of creepy looking and slows you down when you walk through it. Soul Soil has a similar color, but is wavy and doesn't slow you down. You'll know you are in the right place if you see some blue flames coming off the soil. Harvest some of the Soul Soil, you will need one for every four Soul Fire Torches you want to create.
Step 3: Craft the Torches
Now that you have the Soul Soil, you'll just need to gather some Coal or Charcoal and a stick. Throw them into your Crafting Table and you will get 4x Soul Fire Torches for each batch of ingredients you put in!
So, how do these compare to the regular torches? Well, they emit less light than regular torches, so if you are just looking for general lighting then you are better off going with the originals.
However, Soul Fire Torches have one particular use other than looking cool. Soul Fire Torches do not melt snow or ice when they are next to it. So, if you're building a snow base or igloo and are looking for some lightning that doesn't melt it all down, then you can use these!