The Doughs and Don'ts of Challah:
Is the measurement of flour that is obligated in separating challah the same by all types of flour?
 
Do I need to separate challah from cake batter?
 
Do I need to separate challah from Kreplach dough?
 
Is there a way to measure by using cups?
 
Accompanying information is available <a href="https://sites.google.com/view/kashrusbeintheknow/audio-classes/the-doughs-and-donts-of-challah-part-1?authuser=0" target="_blank">here</a>

Doughs and don'ts of Challah Part 2

Short classes on common kosher questions. 
"... Similarly in our time - the last days of exile - it is necessary for there to be an extra strengthening in the observance of kashrus... as a preparation and introduction to entering into Eretz Yisroel with the redemption through our righteous Moshiach."


- Likutei Sichos, Volume 13, Page 297