Below is how I do my butter.
-put a lb of butter with water and herb, trim, whatever... and let it cook for a few to 7 days on low adding water here and there. I use between 1/4lb -1/2lb and they are strong.-Strain and squeeze out the mix into a tall pitcher using a potato ricer. It will maximize the amount you can get out of the material. (As a side note I save the material in the freezer and add it to the next batch. Made some really strong stuff from old, used material recently.)
-place the pitcher in the fridge to separate and solidify. There will be butter on the top and nasty ass water below. -pull the butter off the top when solid and throw out the water. Place the butter in a pot on the stove with new water and let it heat to just almost boiling.
-pour mix back into the pitcher and it goes back to the fridge. Do this over and over until the water is no longer coming out dirty. -Your butter is now ready for candy making and will not burn when cooking the caramels.