Butter a 1 litre pudding basin. Put 2 tbsp of the honey into the prepared basin (if the honey is very thick, warm it gently first to make it more liquid). Put the remaining honey and all the other ingredients into a large bowl and beat together using an electric whisk. Start off slowly, then increase the speed and mix for 2 minutes until all the ingredients are well combined.
Pour the mixture into the pudding basin, on top of the honey. Place a piece of baking parchment on a sheet of foil and make a large pleat in the middle, folding both sheets together (this allows for the pudding’s expansion as it cooks). Put the parchment and foil on top of the pudding, foil side up, and secure with string, looping the end of the string over the top of the pudding and tying it to form a handle that will enable you to lift the pudding in and out of the pan.
Place the basin in a large pan, and pour in enough boiling water to come halfway up the side of the basin. Put a lid on the pan and bring to a simmer. Lower the heat to maintain a simmer and let the pudding steam for 1and 1/4 hours until risen and springy to the touch. Top up the boiling water during this time if necessary so the pan doesn’t boil dry.
Carefully lift the pudding basin from the pan, remove the foil and parchment and run the tip of a small, sharp knife around the edge of the pudding to help release it. Turn onto a warmed large plate and serve piping hot, with custard or cream.