It's great that they published this - I wasn't sure if I could share this externally. I see they left the ingredient that really improved the scores unexpectedly out, presumbly for proprietary reasons.
And the recipe I found internally is "The Real California Cookie" in that paper:
Bake at 163C (325◦ F) until brown:
• 167 grams of all-purpose flour.
• 245 grams of milk chocolate chips.
• 0.60 tsp. baking soda.
• 0.50 tsp. salt.
• 0.125 tsp. cayenne pepper.
• 127 grams of sugar (31% medium brown, 69% white).
• 25.7 grams of egg.
• 81.3 grams of butter.
• 0.12 tsp. orange extract.
• 0.75 tsp. vanilla extract.
• 5¼ oz. of all-purpose flour.
• 7 oz. of milk chocolate chips.
• scant ½ + ⅛ tsp. baking soda.
• ½ tsp. salt.
• ⅛ tsp. cayenne pepper.
• 4½ oz. of sugar (31% medium brown, 69% white).
• 1 oz. of egg.
• 2¾ oz. of butter.
• ⅛ tsp. orange extract.
• ¾ tsp. vanilla extract.
Or, equivalently:
• 167 grams of all-purpose flour.
• 245 grams of milk chocolate chips.
• 2.96 mL baking soda.
• 2.46 mL salt.
• 0.61 mL cayenne pepper.
• 127 grams of sugar (31% medium brown, 69% white).
• 25.7 grams of egg.
• 81.3 grams of butter.
• 0.59 mL orange extract.
• 3.7 mL vanilla extract.
Unfortunately my microliter precision pipette is in the shop otherwise I would be enjoying some of these right now!
(say, as spectra)