How to substitute for mustard seed<br>Use prepared horseradish to add spice. Prepared horseradish is made by combining ground horseradish with vinegar, and sometimes other spices, to form a sauce. You can get it from your local supermarket.
Horseradish cannot be turned into a sauce
( z1 possible :polarity - :ARG1 ( z2 turn :ARG1 ( z3 horseradish ) :ARG2 ( z4 sauce ) ) )