Cut the tomatoes into segments and place on a tray, season with salt, sugar and thyme.
Slow roast at 65°C overnight. You can also use a dehydrator.
When cool mince and mix in the mayo.
Add Worcestershire sauce and tabasco season to taste.
TO MAKE THE CASES
Take a sheet of filo and brush with clarified butter, repeat this process twice to have 3 layers.
Place in a small tart case and cook in the oven at 160°C for 14 minutes.
POLENTA FOAM
Bring half the stock to the boil, add butter and salt. Add polenta and whisk constantly for 2-3min. Add cheese. Pour on to a shallow tray to cool down.
Add the cold stock and chilled polenta to a blender and blend till smooth then pass through a sieve to remove any lumps. Place the polenta into a piping bag.
To build, place the tomato mix in the bottom of the tart shell and place some pickled rhubarb on top, then place your polenta foam on and finish with puffed rice or pine nuts.