Possible Clues:

• Certain legume (Var.)
• Lecithin source
• Seana and the boy get their protein in the Orient
• Food that could be extracted from a bone, say
• Plant protein source
• Protein-rich seed used in making flour, milk etc.
• Sean admits openings for outstanding young actors supporting film option to replace beefy parts
• Seed of a plant used for food, forage and as a source of oil
• Say nothing about prohibition covering English seed