Chives or parsley can be used in place of the tarragon.
From "Poulets and Legumes: My Favorite Chicken and Vegetable Recipes" (2016) by Jacques Pepin. Reproduced by permission of Houghton Mifflin Harcourt/Rux Martin Books. All rights reserved.
Nutrition data for this recipe includes the full amount of rouille. The actual amount of rouille consumed will vary.