Slice two Vienna loaves into diagonal slices, leaving the bottom crust whole. Spread both sides of each slice with any of the following flavoured butters; any butter left over may be spread over the top of the loaves. Wrap each loaf in aluminium foil and heat through in a moderately hot oven (200°C., 400 °F., Gas Mark 6) for 15–20 minutes. Serve at once; keep wrapped in the foil to hold the hea