Indonesian Peanut Sauce
In a sauce pot, heat oil and sweat the onions.
Add hand ripped kaffir lime leaves, garlic and dried chili allow to cook down a bit with caution as to not burn the garlic.
Add sambal or red curry paste, tamarind concentrate and allow the paste to heat.
Add peanut butter and a little water to thin out the sauce. Reduce heat to low.
Season with fish sauce, sugar and tamarind/lime juice to desired flavor. Add sweet dar soy to darken and finish.
If the sauce is too thick, add water to thin out. If the peanut sauce breaks and the oil separates, remove from heat and once cool, rewhip and it should return desired texture; cold water will help too.