About the tomato paste. Some places use ketchup. I much prefer it with tomato paste.
About the hot sauce. I use good old fashioned Tabasco Sauce, but you can use Sriracha or whatever you like. This small amount gives it a mild background heat. Taste it and add more if you wish. I am not into really hot sauces, but I usually use 1/2 teaspoon in this recipe.
About the vinegar. You may be tempted to use cider vinegar or something with more flavor, but resist the temptation. Plain old clear distilled vinegar is the right call for this sauce.
These recipes were created in US Customary measurements and the conversion to metric is being done by calculations. They should be accurate, but it is possible there could be an error. If you find one, please let us know in the comments at the bottom of the page