Answered by: Maulana Nabil Khan
Does erythritol break a fast?
In The Name Of Allah, The Most-Merciful, The Most Kind
Erythritol is a type of sugar alcohol. Erythritol occurs naturally in some fruits and fermented foods, while manufacturers add an industrially fermented version to low sugar and sugar-free food and drink options.
With this being said it will break the fast. Anything that is edible and consumed in liquid or solid form knowingly will break the fast. 
Only Allah knows best
Written by Maulana Nabil Khan
Checked and approved by Mufti Mohammed Tosir Miah
Darul Ifta Birmingham
 Al-Fatawa Al-Hindiyyah Volume 1 Pg 222