01 -
Heat chicken stock with sage in Dutch oven or stock pot. Maintain gentle simmer.
02 -
Peel garlic, slice in half, remove embryonic shoots. Boil in water 3-4 minutes, drain, then mash finely with fork.
03 -
Add mashed garlic to simmering stock and cook gently for 10 minutes.
04 -
Blend egg yolk, mustard, salt, and oil with immersion blender until emulsified. Add egg white if needed for thickness.
05 -
Optional: strain soup. Temper mayonnaise with hot soup, then whisk into pot. Heat through without boiling. Serve with optional garnishes.