Place a large stainless steel stockpot on medium heat. Sprinkle bottom with a pinch of salt and heat for 1 minute. Add oil and heat for 30 seconds, being careful not to let it smoke.
Add celery roots, celery and onion and saute for 6 to 10 minutes, stirring often, until soft but not brown. Add stock and bay leaf and bring to a boil, then reduce heat and simmer for 30 minutes. Add Cashew Cream and simmer for an additional 10 minutes.
Working in batches, carefully remove bay leaf, pour soup into a blender, cover lid with a towel (hot liquid tends to erupt) and blend on high. Season with salt and pepper, and ladle soup into bowls. Garnish each serving with a spoonful of apple and a drizzle of Chive Oil.
Whether you’re making apple pie or simply enjoying a clean snack, there are tons of apples to choose from! Chef Jo explains which apples are best for each job.