Peel and slice the yams

• Peel the yams and trim away any tough white parts.
• Slice them thick, keeping all pieces roughly the same size.

Make the syrup

• In a pot, melt the butter.
• Squeeze in the juice of the orange.
• Add the white sugar, dark brown sugar, cinnamon, nutmeg, vanilla and salt.
• Mix everything well until incorporated, then taste and adjust.

Add the yams and simmer

• Add the sliced yams to the pot and stir so every piece is coated in the syrup.
• Cover and cook for 5 minutes.
• Then leave the lid slightly ajar and cook for about 20 minutes, until the yams are fork tender.

Finish and serve

• Give everything one last stir.
• Check that a fork slides easily through the yams, then serve.