According to our class at the Footsteps of Jesus Seminary and Bible Academy, we teach that consecrating the communion hosts must be done during a mandatory Mass.

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Holy Dishes and Eucharist

It is absolutely mandatory. In the Catholic Church, communion hosts cannot be consecrated outside of a Mass.  

According to Catholic theology and Canon Law (specifically Canon 927), it is strictly forbidden to consecrate the bread or the wine outside of the full Eucharistic celebration. The Church views the sacrifice of the Mass as one complete, inseparable act of worship.  

Here is exactly why the rules are so strict, along with how the Church handles the logistics:

1. The Divine Rule of Both Species
A priest cannot simply say the words of consecration over a basket of bread on its own. For a consecration to be valid, both the bread (Host) and the wine (Chalice) must be consecrated together during the same Mass.  

This layout mirrors the Last Supper and represents Christ’s sacrifice. Consecrating one without the other, or doing it outside of Mass, is considered a very grave violation of Church law.  

2. What About Communion Services?
You might sometimes attend a “Communion Service” at a parish or hospital where there is no Mass, yet people still receive Holy Communion.

In those scenarios, no consecration is happening. The hosts being distributed were already consecrated at a previous Mass and kept safely inside the church’s tabernacle (the locked box near the altar) specifically for later use.

3. What Happens If a Priest Runs Out of Hosts?
If a priest is celebrating Mass and realizes mid-way through distributing Communion that he doesn’t have enough hosts for everyone, he still cannot stop and quickly consecrate more on the spot. He has to either:

Break the remaining consecrated hosts into smaller pieces so everyone gets a sliver.

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Bring out extra pre-consecrated hosts from the tabernacle.

If the tabernacle is completely empty and he runs out, those who didn’t receive can make a “Spiritual Communion” instead. The priest must wait until his next scheduled Mass to consecrate a new supply.

A Note on Who Can Consecrate: Only a validly ordained priest or bishop has the faculty to consecrate the Eucharist. Deacons, lay extraordinary ministers, and regular individuals cannot consecrate hosts under any circumstances.

While communion hosts are tightly bound to the action of the Mass, the rules for the altar and holy dishes (the chalice and paten) are a bit different because they are objects, not bread and wine turning into the Body and Blood of Christ.

The Church uses different vocabulary and separate rituals for them.

1. The Altar: It Is “Dedicated,” Not Consecrated

Under modern Catholic Church law, a permanent church altar is Dedicated (though historically people used the word consecrated).

• Must it happen during a Mass? Yes. The “Order of the Dedication of an Altar” is an incredibly beautiful, solemn ceremony that must take place during a Mass.
• The Ritual: During this specific Mass, the bishop rubs holy Chrism oil directly onto the bare stone or wood of the altar structure, burns incense on top of it, dresses it in white linens, and lights candles. Only after these specific steps are finished does the Mass continue into the Liturgy of the Eucharist.
• Who can do it? Only a Bishop can dedicate a permanent altar (though in rare emergencies, he can give a priest special permission).

Note: If a parish uses a “movable” altar (one not bolted to the floor), it doesn’t receive a full dedication; it simply receives a formal blessing, which a priest can confer outside of Mass. In our case at the Chapel, the Altar is on wheels.

2. The Holy Dishes: They Are “Blessed”

The sacred vessels—specifically the chalice (the cup) and the paten (the small plate that holds the priest’s large host) receive a formal blessing before they can be used.

• Must it happen during a Mass? No. Unlike the hosts or a fixed altar, a chalice and paten can be blessed outside of a Mass.
• The Ritual: There is a specific rite in the Church’s liturgical books called the “Blessing of a Chalice and Paten.” It involves special prayers and anointing the inside of the cup with holy oil, but it can be done on a random Tuesday afternoon in a quiet church if necessary.
• Who can do it? Traditionally, this was reserved for a bishop, but modern church rules allow the parish priest (or the church rector) to bless these vessels.

Summary of the Rules

Item	Action Required	Must it happen during Mass?	Who performs it?
Communion Hosts	Consecration	Yes (Strictly Mandatory)	Priest or Bishop
Permanent Altar	Dedication	Yes (Strictly Mandatory)	Bishop
Chalice & Paten	Blessing	No (Can be done outside Mass)	Bishop or Priest

• See Communion in both kinds
• Holy Dishes
• Eucharist