Simmmer.

Step 1 of 6

Step 1 of 6

Add the beef stock and 2 1/8 cups cold water to a large saucepan. Place the onion halves and ginger in a dry skillet over high heat and char on all sides, 3–5 minutes (or under your broiler). Add the charred onion and ginger to the stock.

05:00

— Charring the onion and ginger is the key to authentic pho depth — don't skip it.