Launch OmniFocus. Create a project called "Recipes". Go to any recipe site in Safari. Run the script.

ingredient-list-to-omnifocus.applescript

tell application "Safari" to set recipetitle to name of front document
tell application "Safari" to set recipeurl to URL of front document

set ingredients to (do shell script "curl http://recipedistiller.com/recipe/classify/?recipeurl=" & recipeurl & " | textutil -convert txt -stdin -stdout | grep '.' | sed 's/	•	DELETE //g' | sed '$d'")

set my text item delimiters to "VIEW RECIPE"
set ingredients to text item 2 of ingredients
set my text item delimiters to "©"
set ingredients to text item 1 of ingredients

set i to quoted form of ingredients
set clean to do shell script "echo " & i & "|  grep '.'"

set l to paragraphs of clean

tell application "OmniFocus" to tell document 1
	set theproject to (first flattened project where its name = "Recipes")
	tell theproject to make new task with properties {name:"Recipe: " & recipetitle, note:"From: <" & recipeurl & ">"}
	repeat with v in l
		set theproject to (first flattened task where its name = "Recipe: " & recipetitle)
		tell theproject to make new task with properties {name:v}
	end repeat
	
end tell

Updated March 24, 2013, adds ability to pull recipe name with ingredients as an indented task group. Also deletes last blank task (but not first) when pulling in ingredient lists.