It is alleged that a man hurled antisemitic abuse alongside the food waste at the 77-year-old religious leader as he left Boots on the Broadway on the morning of September 18.
The incident was reported to the Shomrim, a volunteer organisation that works with the police to protect Jewish communities, and passed on to the Met Police.
A 41-year-old man was arrested on Monday (September 22) on suspicion of committing a religiously aggravated public order offence.
He remains in custody.
Shomrim reported that the incident left the alleged victim “shaken and traumatised”.
A Met Police spokesperson said: “Police investigating a hate crime which is alleged to have taken place in Hackney have made an arrest.
“On Monday, 22 September a 41-year-old man was arrested on suspicion of committing a r