Heat a large saucepan on a medium heat. Add a few tablespoons olive oil and chopped onion. Cook onion with the lid on, stirring every few minutes until the onion is soft but not browned. Will take about 10 minutes.

Increase the heat to medium high and add meat. Cook, stirring until the meat is well browned. Remove from the heat and toss in the soy or fish sauce and vinegar. Taste and adjust seasoning if needed. Remove cooked meat and keep warm in a clean bowl.

Return the pot to a medium high heat. Add cabbage and about 1/4 cup water. Cook with the lid on, stirring every now and then for about 5 minutes or until cabbage is soft.

Return the cooked meat to the pan and allow to warm.

Divide between 2 bowls and top each with a nice big drizzle of mayo.