Place onion, celery and EVOO into the Thermomix bowl and chop 1 sec/speed 6.
Sauté 5 min/Varoma/speed 1/MC OFF.
Meanwhile dry toast the seeds and peppercorns in a frying pan until just starting to smoke. Remove from the heat and cool slightly.Add the toasted spices and all remaining ingredients to the Thermomix bowl and blend 1 min/speed 8.
Add the toasted spices and all remaining ingredients to the Thermomix bowl and blend 1 min/speed 8.
Store in airtight jars in the fridge until use. The flavours will develop and become better over time. You should probably try and leave it about a week before using it.