A good substitute for fennel pollen in recipes is ground fennel seeds. They have a similar flavor profile and can be used in equal amounts as a replacement.
Anise seeds are a good substitute for fennel seeds in some recipes.
A good substitute for lemon in recipes is lime, vinegar, or orange zest.
Lemon juice is a good substitute for vinegar in cooking recipes.
Anise seed will substitute for fennel seed--use about half as much. Fennel seed is readily available at mid-east or Asian markets and it's very cheap.
A good substitute for hondashi in recipes is bonito flakes or dashi powder.
Parsley is a good substitute for cilantro in recipes, as it provides a similar fresh and slightly peppery flavor.
A good substitute for crme frache in recipes is a mixture of sour cream and heavy cream.
A good substitute for tomato bouillon in recipes is tomato paste or a combination of tomato paste and vegetable broth.
Paprika can be a good substitute for cayenne powder in recipes if you want a milder flavor.
A good substitute for black cardamom in recipes is green cardamom. It has a similar flavor profile but is milder and more aromatic.
A good substitute for cumin in recipes is ground coriander. It has a similar earthy and citrusy flavor that can work well in place of cumin.
A good substitute for mustard in recipes is horseradish or mayonnaise. These ingredients can provide a similar tangy flavor to dishes that call for mustard.