I personally dont measure, but I think if I did it would be similar to below measurements.
For medium to large size roast:
Onions- 1 or 2, cut up
Garlic- half bunch
Ketshup- 1/8 cup
Honey- 1/8 cup
Paprika-1 Tablespoon
Wine- 2-3 Tablespoons
How long what degrees? I cook it on the stovetop on low flame until I see the meat looks like its starting to lose its firmness and is almost falling apart at the edges. Then I let it cool somewhat and refrigerate it and slice when cold. Liquid can be strained and used for gravy with addition of 1 Tablespoon of flour to thicken, and if desired a tablespoon of honey and ketshup. Reheat slices in gravy and serve.
I hope you like it.