The recipe is from Rebecca Seal's new cookbook on Istanbul cuisine. She calls it Turkish potatoes, but I'm almost certain it's a Kurdish recipe. Either way, it's simple and really tasty. Just don't add the onions zu early or they will burn.
There isn't a specific "diabetes diet", instead, those with diabetes can manage their condition by enjoying a healthy, well balanced diet that's high in fibre, low in sugar, salt and fat and which also includes the occasional treat. However, we understand that you sometimes may want a little more guidance when making your food choices and that's why BBC Good Food and Diabetes UK have teamed up to highlight some recipes that encompass all the principals of eating well for diabetes.