I think this was in an old issue of SFI - Super Food Ideas, I thought it sounded a bit different from your everyday rosti as it uses sweet potato, salad cream & mustard, a great side dish to serve with steak or fish.
- Squeeze as much moisture as you can from grated potatoes. Place both into a large bowl.
- Add remaining ingredients & stir well to combine.
- Heat oil in a large pan & cook 1/4 cup batches of the mixture until golden on both sides.
- Drain on absorbent paper.