To a large pot over medium heat, add 1 teaspoon of neutral oil and sugar. Allow the sugar to caramelize until it becomes a dark amber color. (Watch this closely because it will turn from a dark amber to burnt quickly. If some parts of the sugar are browning faster than others, use a silicone spatula to stir it together).
1 tsp neutral oil, ¼ cup sugar
Once the sugar is caramelized, add the ground beef and ½ teaspoon of salt. Break it up into smaller clumps using a spatula before adding in the onion, garlic, ginger, black pepper and 2 tablespoons of fish sauce. Reserve the last tablespoon of fish sauce to season as needed, at the end.
1 lb ground beef, 1 medium onion, 2 garlic cloves, 2 tsps ginger, ½ tsp black pepper, 3 tbsps fish sauce, ½ tsp kosher salt
Stir to combine and continue cooking the ground beef until the caramelized sugar is fully dissolved. Mix together cornstarch and water to make a cornstarch slurry. Add the coconut water, dark soy sauce and cornstarch slurry to the ground beef and mix to combine.
½ cup coconut water, ¾ cup water, 1 ½ tbsps cornstarch, 1 tbsp dark soy sauce
Bring it to a gentle boil, cover, and reduce to a simmer for 8-10 minutes, to braise. Uncover and continue simmering until the beef thickens. Season with more fish sauce and salt to taste, as needed.
Enjoy in a bun or over a bowl of rice with scallion greens, cucumber, cilantro, and Vietnamese pickles!