lemon thyme beurre monté

The first of the infusions– lemon thyme, was made by gently warming the cream to 125F/52C to more readily allow the release of essential oils from the herb, then chilled and infused overnight before culturing. It occurred to me while churning this butter that I could perhaps have saved a step by letting the infusion take place simultaneously with the culturing. It's back to the store to test that idea. Of course, I could have skipped the ripening stage and churned the butter directly from the chilled, infused cream, but I am currently enamored with the plangent and resounding flavor of cultured butter.

Infusing at the cream stage is, so far, turning out to be an effective way to introduce other flavors into the butter. Here, lemon thyme, whose terpenes can be assertive and overwhelming to more delicate flavors, mellowly haunts in the background of the finished butter, which is turned into a beurre monte for this dish.

Beurre monté was brought into modern cuisine by Thomas Keller at The French Laundry. It is an emulsion in which cold butter is gradually whisked into a small amount of hot water and can be heated up to 180F/82C without breaking. While it is typically made with water, I've used a lemon thyme and wine stock in a 1:4 (stock:butter) ratio to reinforce the flavor and lighten the richness of the sauce.

This dish also reflects another current fascination with  pliable Parmesan , an emulsion of cheese
 sherry, and sodium citrate. In the Umami burger, I used sake to boost the glutamates. Here, sherry was used to test Heston Blumenthal's groundbreaking discovery of diketopiperazines (DKPs), a compound unique to sherries that are produced by yeast activity during secondary fermentation and enhance glutamate-rich foods. Anyone who has nibbled on a well-aged cheese while sipping sherry will recognize and appreciate this symbiotic relationship. As always, flavor is what grabs my attention, but the consistency of this product also appeals to my sense of play. At room temperature it is as soft and malleable as playdoh. I can tell you about the restraint that it took to roll these pea-sized balls, but I'll spare you of the inner-child-induced 'sculptures" that took place after.

The effect of salt on dry-cured meats such as prosciutto di Parma or serrano ham is purely chemical but the transformation is so profound that it seems supernatural. Opaque muscle filaments are rendered translucent, flavorless proteins break down into concentrated glutamates, and muscle fats fragment to form a kaleidoscope of aroma compounds that range from fruity, herbal, grassy, floral, to nutty and buttery. Again, one couldn't ask for more in terms of flavor, but these hams also possesses a silky suppleness that allows it to be molded by compressing finely chopped or thinly sliced pieces. One advantage to breaking down and restructuring prosciutto is that it can be presented in playful forms that retain a resilient bite without all the chew.

Prosciutto di Parma and Parmesan cheese share not only an indelible terroir, but also similar aroma compounds. Another connection is that the pigs, whose hind legs are destined for prosciutto, are often fed the whey from the production of Parmesan. The trinity of cheese, ham, and peas is rooted in the advent of spring, when the harvest of peas marks the end of lean winter months and the beginning of the celebratory feasting season, an apt time to break out ripe-and-ready hams and cheese.

I can't say that my winter months have been lean, but I'm ready for some celebratory feasting.

Bring on the peas!