Slice all the vegetables in strips.
lightly fry/Sautee vegetables in medium heat for a minute.
Now add ketchup like half a cup depending on number of sausages.
Add garlic

Then add sausages either full or cut in half.
Add a teaspoon of vinegar.
Mix everything up in high heat and it's ready to be served.

I.e. whole cooking process ideally should not be more than 5minutes so the veggies remain crunchy.

Goes well with rice, fries,potato wedges and even mashed potatoes