Trim, peel, and dice <quantity>1</quantity> large celeriac into medium pieces

Trim, peel, and dice <quantity>1</quantity> medium onion into medium pieces

Add <quantity>1<unit>tbsp</unit></quantity> of extra virgin olive oil to a wide pot over medium-high heat

Add the diced celeriac and <quantity>½<unit>tsp</unit></quantity> of salt

Season with black pepper to taste. Stir regularly to avoid burning the celeriac

Add the diced onion and cook until it is translucent and the celeriac starts to brown

Add <quantity>1<unit>tbsp</unit></quantity> of butter and stir

Add <quantity>1<unit>cup</unit></quantity> of heavy cream

Simmer over low heat for 20m until the cream is reduced by half

Transfer the celeriac and cream to a blender. Pulse on low speed until everything starts to comes together

Add <quantity>¼<unit>cup</unit></quantity> of heavy cream and blend on low speed until combined, but still chunky

Add <quantity>3<unit>tbsp</unit></quantity> of extra virgin olive oil and <quantity>¼<unit>cup</unit></quantity> of heavy cream. Blend until smooth and adjust the salt if needed. The celeriac cream is ready

Enjoy this rich and savory cream!