Firstly, rinse and remove stalks of the red chilies. Chop in an electric chopper.
Then transfer the chopped chilies in a blender. Discard the seeds.
Remove the peels from garlic and chop roughly.
Blend the chilies and garlic using water till thick coarse texture paste is formed.
Transfer the chilli garlic paste in a wide pan and keep on low to medium flame.
Add a cup of oil.
Sauté the chilli garlic paste on medium flame till all the water dries up . Take care since the water droplets may splutter all over. It is a good practice to keep the pan half covered till the water dries up. Need to be careful and patient here...
Once water dries up , add the salt.
Sauté on low flame till rawness of chilies goes.
Some more oil maybe needed while sautéing.
Add the vinegar and sauté till oil floats.
Once the chilli sauce is cooked and oil floats , put off the flame.
Cool and then add the soy sauce . This step is optional. You may choose to store the chilli garlic sauce without the soy sauce . The soy sauce can be added just before serving.
Serve as an accompaniment with spring rolls, tempuras, etc