Pestle & mortar guacamole

Finely chop the onion into small pieces and add half to the mortar

Deseed the chilli, finely chop and add to the mortar

Chop up the coriander and add half to the mortar

Roll the lime on a chopping board, cut in half and squeeze the juice into the mortar

Use the pestle to mash up the ingredients for ~1 minute

Half the avocado and slice into cubes

Spoon out the avocado into the mortar and mash together with the pestle

Move the contents of the mortar into a serving bowl, add the other half of the onion and coriander

Chop up the tomato into small pieces and add to the serving bowl

Season with salt and pepper and mix it all together

Give it a taste and add more lime if needed