Put 100ml of lukewarm water in your blender with the spinach and blitz until as smooth as possible.
Put the flour, yeast and salt into a bowl and mix together.
Pour in the olive oil and two thirds of the spinach mixture and bring together in the bowl with a wooden spoon or by hand. Add the remaining liquid little by little to mop up any remaining dry patches - you might not need it all.
Turn the dough out onto a floured work surface and knead for a few minutes until smooth and return to the bowl.
Cover with a wet tea towel or cling film for an hour until doubled in size.
Shape the fingers
Preheat the oven to 200C (180C fan, 400F).
Knock back the dough by tipping it on a lightly floured surface and kneading briefly to remove any larger air bubbles.
Cut the dough into 4 pieces. Work with one piece at a time, keeping the other pieces covered so they don’t dry out.
Divide the piece into 6 small pieces and roll them out really thin and long.
Squeeze the ropes to create bony knuckles along the length of each finger. Remember that the bread will expand in the oven and lose some definition, so make the dips and knuckles very pronounced.
Add the nails
Press the end of each finger really flat - dampening your finger helps.
Dab a little tomato puree to the flattened end.
Press an almond on top of the tomato puree to make the nails.
Repeat the process with the remaining pieces of dough.
Bake in the oven for 8-10 minutes until they are golden and feel hollow light for their size.
Video
Notes
These Witches Finger Breadsticks are very kid-friendly, but you might want to remove the whole almonds for young children where they may present a choking hazard.If taking somewhere such as a school or potluck where you are asked not to bring nuts, you could try using olives or bits of red pepper in place of the almonds.