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.
Sheffield, IA (Iowa) Houses and Residents. Total population: 1,162 (Urban population: 0, Rural population: 925 (5 farm, 920 nonfarm)) Houses: 404 (363 occupied: 370 owner occupied, 64 renter occupied) Housing density: 73 houses/condos per square mile. Median price asked for vacant for-sale houses and condos in 2015 in this county: $99,220.