Place onion and parsley into your food processor and pulse a couple of seconds until roughly chopped. scrape down the side of the bowl with a spatula
Add in quark, cream cheese, lemon juice and Tobasco and whizz up on medium for 20 seconds. scrape down the side of the bowl with a spatula
Add the gherkin and smoked salmon and whizz on medium for 30 seconds until a smooth mousse-like consistency is achieved. For a coarser texture, pulse 3-4 times, until desired consistency
Use immediately or for best results chis in the fridge for 30 minutes. Garnish with chopped chives or spring onion before serving