Use ¼ cup oil to briefly bloom ginger, jalapeno, and star anise in stock pot, 1-2 minutes.
Add lemongrass stock and bring to boil.
Meanwhile, sweat leeks in 4 gallon stock pot.
Strain broth, add soy.
Add carrots to leeks and cook, stirring for 3 minutes. Add the lemongrass broth.
Serve with "floating salad" on top.