i posted this a few years ago but it's worth repeating. got it in argentina where they really know how to do beef

tale a bunch green onions and slice them lengthwise into thin slices (there is a little tool on amazon for a oouple bucks that works)
6-8 slices of bacon - fry till crisp and remove saving the grease
cook the onion slices in the bacon grease being careful not to overcook
add one clove minced garlic per person served
add about 1 cup of white wine to the pan and simmer/reduce
when reduced add about 6-8 oz of heavy cream
stiring slowly to thicken
add one cube of beef bullion per person
add the crumbled bacon bits
salt/pepper to taste
serve over beef/pasta etc