1

Preheat oven to 220°C/200°C fan forced.

2

Tie beef with kitchen string at 2cm intervals. Brush beef with 1 tablespoon of the oil; sprinkle with salt and pepper. Toss beetroot in remaining oil; add to dish. Roast, uncovered, about 20 minutes.

3

Reduce oven temperature to 180°C/160°C fan forced; roast beef and beetroot, uncovered, further 1 hour or until beef is cooked as desired and beetroot are tender. Remove beef from dish; cover, stand 20 minutes. Continue roasting beetroot further 15 minutes or until tender.

4

Meanwhile, boil, steam or microwave potatoes until tender; drain. Mash potatoes; push through a sieve or mouli into a large bowl. Stir in butter then gradually beat in warmed milk and cream.

5

Serve beef with roasted beetroot, potato puree and horseradish.