Some have commented that they thought "intinction" was no longer lawful in the Latin Rite. What is unlawful is for the communicant to take the host in their hand and dip it into the Precious Blood themselves. However it is perfectly lawful minister of Holy communion to intinct the Host for the communicant and the General Instruction of the Revised English and Latin Roman Missal makes it quite clear that it is:
IV. SOME GENERAL NORMS FOR ALL FORMS OF MASS
284. When Communion is distributed under both kinds,
a. The chalice is usually administered by a deacon or, when no deacon is present, by a
priest, or even by a duly instituted acolyte or another extraordinary minister of Holy
Communion, or by a member of the faithful who in case of necessity has been
entrusted with this duty for a single occasion;
b. Whatever may remain of the Blood of Christ is consumed at the altar by the priest or
the deacon or the duly instituted acolyte who ministered the chalice. The same then
purifies, wipes, and arranges the sacred vessels in the usual way.
Any of the faithful who wish to receive Holy Communion under the species of bread alone
should be granted their wish.
285. For Communion under both kinds the following should be prepared:
a. If Communion from the chalice is carried out by communicants’ drinking directly from
the chalice, a chalice of a sufficiently large size or several chalices are prepared. Care
should, however, be taken in planning lest beyond what is needed of the Blood of
Christ remains to be consumed at the end of the celebration.
b. If Communion is carried out by intinction, the hosts should be neither too thin nor too
small, but rather a little thicker than usual, so that after being dipped partly into the
Blood of Christ they can still easily be distributed to each communicant.
286. If Communion of the Blood of Christ is carried out by communicants’ drinking from the
chalice, each communicant, after receiving the Body of Christ, moves and stands facing the
minister of the chalice. The minister says, Sanguis Christi (The Blood of Christ), the
communicant responds, Amen, and the minister hands over the chalice, which the communicant
raises to his or her mouth. Each communicant drinks a little from the chalice, hands it back to the
minister, and then withdraws; the minister wipes the rim of the chalice with the purificator.
287. If Communion from the chalice is carried out by intinction, each communicant, holding a
communion-plate under the chin, approaches the priest, who holds a vessel with the sacred
particles, a minister standing at his side and holding the chalice. The priest takes a host, dips it
partly into the chalice and, showing it, says, Corpus et Sanguis Christi (The Body and Blood of
Christ). The communicant responds, Amen, receives the Sacrament in the mouth from the priest,
and then withdraws.