PANTRYFLEX

On the jar: Lemonhall Parsley–mustard

blend · herb sauce

★ STARRED KITCHENPrep 10 min

Lemonhall Parsley-Mustard

Independent adaptation of a publicly published Michel Roux Jr recipe. Not affiliated with, sponsored by, or endorsed by Michel Roux Jr.

From a starred kitchen.

Ratio

Ratio by volume: Water 120 ml, Parsley 120 ml, Dijon Mustard 15 ml
Water 120 mlParsley 120 mlDijon Mustard 15 ml

Ingredients

  • Water120 ml leek cooking water
  • Parsley8 Tbsp fresh parsley (120 ml)
  • Dijon Mustard1 Tbsp Dijon mustard (15 ml)

Method

  1. This sauce needs a blender — the jar is for storing it, not making it.
  2. Combine measured ingredients and blend until smooth.
  3. Taste and adjust salt and acid.

Companion jar

Lemonhall Parsley–mustard wants a blender — make it from this page.

The jar carries pour-and-shake sauces. These are its closest cousins from kitchens like this one:

3 kitchens · 6 stars · 4 national awards

First run is small.

Leave an email and we’ll hold a jar with its companions on it.

Provenance

Classic French chef who led Michelin-starred Le Gavroche in London for decades before its 2024 closure. Second-generation Roux family cook trained in haute cuisine technique.

Originally published as Parsley–Mustard Sauce.

More from this kitchen

FAQ

Can this go in a shake jar?

No — this one needs a blender or stove, so make it from this page. Jars only carry pour-and-shake sauces — its companion jar is below.

What do the quantities mean?

Amounts follow the published recipe in household units (with metric in parentheses). On a jar, every sauce scales to the same fill height.

Where did this recipe come from?

Adapted from Michel Roux Jr / Seafood from Norway (roast cod leek mash…) (published as “Parsley–Mustard Sauce”). Full citation lives in Provenance.