Yes, dry mustard can safely be used as a substitute for mustard seed. However, it may make the brine cloudier than mustard seed and may alter the flavor.   1 teaspoon mustard seeds = 1Â½ teaspoons dry mustard.
Humeston is a city in Wayne County, Iowa, United States. The population was 494 in the 2010 census, a decline from 542 in the 2000 census.
Harcourt is a city in Webster County, Iowa, United States. The population was 340 at the 2000 census. Harcourt is located at 42Â°15â²43â³N 94Â°10â²36â³W / 42.26194Â°N 94.17667Â°W / 42.26194; -94.17667 (42.262056, -94.176589). According to the United States Census Bureau, the city has a total area of 0.6 square miles (1.5 kmÂ²), all of it land.