Possible Clues:

• Pulse of one novice fast at first
• Pulse is one fifty after fast time
• Vegan's protein source, perhaps
• Soup ingredient from a pod
• Pulse is fast — over one fifty
• 'Seed, pulse (6)'
• The Italian provided first part of vegetarian diet
• Edible seed used in soups etc.
• I left with fast pulse
• Small seed used for food