Slice beef and coat in corn starch and let sit for 10 minute.
Heat oil in hot wok and add beef strips to brown.
Add onion, garlic and ginger and stir through beef for approx 5 minutes.
Add soy sauce, ketchup manis, honey, chilli and bring heat down to simmer.
Add vegetables, brown sugar and water, mix well and simmer for 20min to reduce. Add small amount of water if sauce too thick.
If sauce too thin allow to simmer longer.
You can add more or less garlic and ginger depending on your tastes. Same goes for the sweetness(brown sugar) and saltyness(add salt) . Don't be afraid to make small changes to suit your tastebuds, when simmering you can make adjustments to your liking while taste testing.