Tools
Three things go wrong mid-recipe: the jar is empty, the recipe is in units you are not using, or the herb in front of you is the wrong form. These tools answer those, using the ratios and refusals already published in the guides.
You are building a spice rack
Start with the food you cook, then give every jar a job.
You are out of something
The jar is empty and the pan is already hot.
The recipe uses different units
Fresh against dried, spoons against grams, whole against ground.