Heat large saute pan on high heat.
Add vegetable oil and wait until the oil is nearly smoking.
Add the small broccoli spears, and lower the heat to medium-high.
Shake the pan to coat the spears in the very hot oil.
Stir occasionally every few minutes to encourage even browning.
After 5 minutes of cooking, increase the heat to high, and add the red onions and kosher salt.
Cook until the onions and broccoli are cooked through, but still have a small amount of bite and are not soft and mushy.
Add the chicken glace, and wait until the vegetables absorb the liquid.
Turn off the heat and remove pan from heat.
Add soy sauce to taste.
Add the sesame oil and stir to combine.
Taste and add more soy sauce if desired.
Serve hot, garnished with the toasted sesame seeds.