Heat 4 tbsp oil in pan and add 1 tbsp chopped garlic and sauté
When garlic turns to brown color add the beef strips and allow frying until the water of beef dries.
Then add salt, 1 tsp black pepper, 3 tbsp soya sauce and 1 tsp sugar.
Cook nicely then add a little water, cut the cubes of cucumber and add in the beef.
Black sauce beef with cucumber is ready to serve.