Rinse in cold water and drain in a colander.
Let them drain well for about ten minutes, then dry them in a clean cloth.
Wash the parsley and coriander and dry well in a salad spinner.
Mince onion and garlic.
coarsely chop the parsley and coriander.
In a food processor or thermomix, blend the chickpeas, onion, garlic, parsley, coriander, spices, baking soda, sesame seeds and lemon juice until you obtain a thick, grainy paste.
If you have a small food processor, have the mixture for easier blending.
Blend in pulses at first, then continuously, stopping once or twice to scrape edges and check consistency.
The texture should not be smooth but sandy, you can see small grains.
However, if you squeeze the dough in your hands, it will compact and clump together.
Pour the dough into a bowl, cover with cling film and leave it in the fridge for 1 hour.
This allows the aromas to diffuse and makes it easier to shape into a ball.
At this stage, you can leave it in the fridge for 2-3 days, or freeze it in ziplock bags for later use.
Remove the bowl from the fridge and knead the dough for a few seconds, then shape into 20 g (0.7 oz) balls (about the size of a walnut).
You can use a special falafel scoop.
Moisten your hands and smooth the balls by rolling them from one palm to the other.
Line them on a plate as you go.
As you like, you can flatten them slightly or leave them in a ball . At this stage, you can freeze them on a plate, then put them in a ziploc bag and freeze them for up to 6 months.