Separated the kangkong leaves from the stalk. Cut the stalk into 2 inch length pieces. Set aside.

Prepare the toasted garlic by following this guide: How to make toasted garlic. Set aside.

In a bowl, combine beef broth, oyster sauce, and corn starch. Mix well.

Heat 2 tablespoons of cooking oil (preferably the one used to make toasted garlic) in a pan.

When the oil gets hot, put-in the sliced kangkong stalks. Cook for 2 minutes.

Pour-in the oyster sauce, beef broth, and cornstarch mixture. Add the toasted garlic. Stir. Cook for 1 minute of until the sauce starts to thicken.

Add the kangkong leaves and red pepper flakes. Let it cook for 1 to 2 minutes.

Sprinkle salt and ground black pepper to taste.

Transfer to a serving bowl. Sprinkle sesame seeds on top.

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