Slow-Roasted Filet of Beef and Basil Parmesan Mayonnaise

INGREDIENTS

Filet of beef tenderloin, whole

1/2 cup

Basil, fresh lightly packed leaves

Branches fresh tarragon

1/2 tsp

Garlic

Egg yolks, large

Basil parmesan mayonnaise

1 tbsp

Dijon mustard

3 tbsp

Lemon juice, freshly squeezed

2 tsp

Black pepper, coarsely ground

4 tsp

Kosher salt

Kosher salt and freshly ground black pepper

11 tbsp

Olive oil, good

1 cup

Vegetable oil

1/2 cup

Parmesan cheese