|Dry mustard||1⁄2 Teaspoon|
|Oil||1 Cup (16 tbs)|
Put egg, seasonings, vinegar, and 1/4 cup oil in blender.
Cover and process at blend.
Immediately remove feeder cap and pour in remaining oil in a steady stream.
If necessary stop blender and use rubber spatula to keep mixture around blades.
Cover and continue to process.
Store in refrigerator.