Mix the yeast,
milk and 2.5ml/ 'h tsp of the sugar. Leave for 15
minutes to dissolve. Mix the flour, sugar and salt.
Make a well; add the yeast, vanilla and egg to make
a rough dough. Knead until smooth, wrap and chill.
Roll the butter
to form two 15 x 10cm/6 x 4in rectangles. Roll the
dough to a 30 x 20cm/12 x 8in rectangle. Place one
butter rectangle in the centre. Fold the bottom
third of dough over and seal the edge. Place the
other butter rectangle on top and cover with the top
third of the dough.
Roll the dough
into a 30 x 20cm/12 x 8in rectangle. Fold into
thirds. Wrap and chill for 30 minutes. Repeat twice
more. After the third fold, chill for 1- 2 hours.
Grease a baking sheet.
Roll out the
dough to a 63 x 15cm/25 x 6in strip. Mix the filling
ingredients and spread over, leaving a 1cm or 0.5in
edge. Roll the dough into a cylinder, place on the
sheet in a circle and seal the edges. Cover and
leave to rise for 45 minutes.
Preheat the oven
to 200'C/400"F/Gas 6. Slash the top every 5cm/2in,
cutting 1cm/ 0.5in deep. Brush with the egg and milk
Bake for 35-40 minutes until golden. Cool. To serve,
mix the icing sugar with some water, then drizzle
over the wreath. Sprinkle with some nuts.