Sources & Philosophy
 Challah – The Custom and its Meanings
Introduction at the First Shabbat Reception
A Collection of Shabbath Blessings
A Cow That Rests on Shabbat
A Day of Rest and Holiness Have you Granted your Nation
A Prayer to Recite While Candle Lighting
A Spice of Shabbat
The Chassid Desecrated Shabbat
A Woman of Valor
And Where was the Light Hidden?
Candle Lighting Blessing
Candle Lighting Blessing - Kibbutz Hatzerim
Candle Lighting Blessing - Kibbutz Ma'abarot
Candle Lighting Blessing - Kibbutz Ma'ayan Tzvi
Candle Lighting Blessing - Kibbutz Mishmarot
Candle Lighting Blessing - Kibbutz Nir Eliyahu
Candle Lighting Blessing - Kibbutz Ramat Yochanan
Blessing Over Shabbat Candles - Rosh Hanikra
Candle Lighting Blessing - Kibbutz Mishmar Hasharon
Candle Lighting – the Custom and its Explanations
Comparison of Blessings
Delight or Torah Study
Discussion on Blessing over the Candles
Go and Inform them
Havdalah
He Ceased Work and Rested
He Who Distincts Sacred from Mundane
Ideology, Culture and Shabbat
Joseph Honors the Shabbat
Kiddush
Kiddush of a Kibbutz
Kiddush over the Wine 
Lighting Candles on Friday Nights, Yes or No
Lord! Give me the Shabbat
Many Candles Shine
Medrash and Tale Excerpts
My Shabbat – Past and Present
On Shabbat Parties in the Kibbutz
Our Hearts Shall Rise
Passages about Shabbat 
Remember and Guard
Self-Service and Shabbath
Seven Flavors of Shabbat in Dry Bread
Shabbat Candles
Shabbat Slaves
Shabbat is a Covenant with the Entire G-dly Creation
Sits and Cries on Shabbat
So that Your Slave Rests as You Do
Special Shabbats in the Summer Months
The 39 Principal Acts of Labor
The Chassid and the Shabbat
The Commandment of Shabbat
The Commandment of Shabbat - Deuteronomy
The Completion of Work is Far from Us
The Feeling of Shabbat
The Glow on One's Face on Shabbat
The Jewish People are your Partners
The Meaning of Shabbat
The Meaning of Shabbat 2
The Quarrel Between the Heart and the Mind
The Shabbat and the Family
The Shas Pleas
The Social Cultural Justification for Shabbat
Two Candles are One
What is Meant by – 'Welcoming the Shabbat'?
What is Renewal if not Shabbat?
Why was Shabbat Created? For Separation
With What do you Sanctify?
Women Becoming Correct by Lighting Candles
General Kibbutz Candle Lighting Blessing
The Dish of Shabbat that Gives off a Fragrance
The Eyes that Kindles Lights 

 Challah – The Custom and its Meanings

Challah is special white bread served on Shabbat and holidays. Possibly the custom of placing challah on the Shabbat table corresponds the breads placed in the Tabernacle (Leviticus 24, 5-9) and that were customary in the Sanctuary as well.  The source of the name challah is found in the commandment of 'Separation of the Challah' – the commandment to dedicate a piece of dough as a contribution to a priest. Since it was customary to prepare bread for Shabbat and for the entire week, the bread for Shabbat was called – challah.

The Challahs of Shabbat are also called "Doubled Bread" – (two loafs of bread) in commemoration of the double portion of manna that the Holy-One-Blessed-be-He lowered from heaven to the Children of Israel in the desert, so that they would not have to gather manna on Shabbat, thereby desecrating the Shabbat (Exodus 16) Some braid the challah out of seven strands of dough to symbolize the seven days of the week, or – the seventh day, some braid it using three strands of dough, and some braid it with two strands to symbolize the two commandments of the Shabbat: "Guard the day of Shabbat to sanctify it" and "Remember the day of Shabbat to sanctify it".

Challahs are covered with a special covering, generally embroidered and decorated.

The blessing to recite is: "Blessed are you G-d our Lord, king of the universe, who takes out bread from the land", after which, the bread is cut by hand and handed out after being dipped in salt, to those participating in the meal. The commandment is to eat a piece of bread at least the size of an olive. The symbolic significance of Challah of Shabbat lies in its reflection of the creation and its abundance, and man who integrates with nature and produces his food.

https://www.eng.chagim.org.il/STUDY/-Challah-–-The-Custom-and-its-Meanings
More >